diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 7460f5295379..291cfbe8c977 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -13393,6 +13393,12 @@
      {}
     ]
    ],
+   "payment-request/MerchantValidationEvent/complete-method-manual.https.html": [
+    [
+     "/payment-request/MerchantValidationEvent/complete-method-manual.https.html",
+     {}
+    ]
+   ],
    "payment-request/PaymentAddress/attributes-and-toJSON-method-manual.https.html": [
     [
      "/payment-request/PaymentAddress/attributes-and-toJSON-method-manual.https.html",
@@ -109609,6 +109615,18 @@
      {}
     ]
    ],
+   "css/css-contain/contain-layout-015.html": [
+    [
+     "/css/css-contain/contain-layout-015.html",
+     [
+      [
+       "/css/reference/ref-filled-green-100px-square.xht",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-contain/contain-layout-016.html": [
     [
      "/css/css-contain/contain-layout-016.html",
@@ -122373,54 +122391,6 @@
      {}
     ]
    ],
-   "css/css-grid/layout-algorithm/grid-percent-cols-filled-shrinkwrap-001.html": [
-    [
-     "/css/css-grid/layout-algorithm/grid-percent-cols-filled-shrinkwrap-001.html",
-     [
-      [
-       "/css/css-grid/layout-algorithm/references/grid-percent-cols-filled-shrinkwrap-001-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-grid/layout-algorithm/grid-percent-cols-spanned-shrinkwrap-001.html": [
-    [
-     "/css/css-grid/layout-algorithm/grid-percent-cols-spanned-shrinkwrap-001.html",
-     [
-      [
-       "/css/css-grid/layout-algorithm/references/grid-percent-cols-spanned-shrinkwrap-001-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html": [
-    [
-     "/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html",
-     [
-      [
-       "/css/css-grid/layout-algorithm/references/grid-percent-rows-filled-shrinkwrap-001-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html": [
-    [
-     "/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html",
-     [
-      [
-       "/css/css-grid/layout-algorithm/references/grid-percent-rows-spanned-shrinkwrap-001-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
    "css/css-grid/layout-algorithm/grid-stretch-respects-min-size-001.html": [
     [
      "/css/css-grid/layout-algorithm/grid-stretch-respects-min-size-001.html",
@@ -134173,42 +134143,6 @@
      {}
     ]
    ],
-   "css/css-text-decor/text-decoration-underline-position-horizontal.html": [
-    [
-     "/css/css-text-decor/text-decoration-underline-position-horizontal.html",
-     [
-      [
-       "/css/css-text-decor/reference/text-decoration-underline-position-horizontal-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-text-decor/text-decoration-underline-position-vertical-ja.html": [
-    [
-     "/css/css-text-decor/text-decoration-underline-position-vertical-ja.html",
-     [
-      [
-       "/css/css-text-decor/reference/text-decoration-underline-position-vertical-ja-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-text-decor/text-decoration-underline-position-vertical.html": [
-    [
-     "/css/css-text-decor/text-decoration-underline-position-vertical.html",
-     [
-      [
-       "/css/css-text-decor/reference/text-decoration-underline-position-vertical-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
    "css/css-text-decor/text-emphasis-color-001.xht": [
     [
      "/css/css-text-decor/text-emphasis-color-001.xht",
@@ -169590,7 +169524,7 @@
      "/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html",
      [
       [
-       "/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001-ref.html",
+       "/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-paint-formatting-context-margin-001-ref.html",
        "=="
       ]
      ],
@@ -169933,18 +169867,6 @@
      {}
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    ],
-   "css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001.html": [
-    [
-     "/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001.html",
-     [
-      [
-       "/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001-ref.html",
-       "=="
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-     {}
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-   ],
    "css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-inline-block-001.html": [
     [
      "/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-inline-block-001.html",
@@ -173029,18 +172951,6 @@
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-   "css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016.html": [
-    [
-     "/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016.html",
-     [
-      [
-       "/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016-ref.html",
-       "=="
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    "css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/position-absolute-containing-block-001.html": [
     [
      "/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/position-absolute-containing-block-001.html",
@@ -186445,18 +186355,6 @@
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    ],
-   "html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html": [
-    [
-     "/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html",
-     [
-      [
-       "/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image-ref.html",
-       "=="
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-     ],
-     {}
-    ]
-   ],
    "html/semantics/embedded-content/the-audio-element/audio_001.htm": [
     [
      "/html/semantics/embedded-content/the-audio-element/audio_001.htm",
@@ -221465,16 +221363,6 @@
      {}
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    ],
-   "cookie-store/resources/helper_iframe.sub.html": [
-    [
-     {}
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-   ],
-   "cookie-store/resources/helpers.js": [
-    [
-     {}
-    ]
-   ],
    "cookie-store/resources/http_cookie_and_set_cookie_headers.js": [
     [
      {}
@@ -247820,7 +247708,7 @@
      {}
     ]
    ],
-   "css/css-contain/support/blue50wBy25h.png": [
+   "css/css-contain/support/blue50wBy23h.png": [
     [
      {}
     ]
@@ -247905,11 +247793,6 @@
      {}
     ]
    ],
-   "css/css-device-adapt/META.yml": [
-    [
-     {}
-    ]
-   ],
    "css/css-display/META.yml": [
     [
      {}
@@ -258230,26 +258113,6 @@
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    ],
-   "css/css-grid/layout-algorithm/references/grid-percent-cols-filled-shrinkwrap-001-ref.html": [
-    [
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-    ]
-   ],
-   "css/css-grid/layout-algorithm/references/grid-percent-cols-spanned-shrinkwrap-001-ref.html": [
-    [
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-   ],
-   "css/css-grid/layout-algorithm/references/grid-percent-rows-filled-shrinkwrap-001-ref.html": [
-    [
-     {}
-    ]
-   ],
-   "css/css-grid/layout-algorithm/references/grid-percent-rows-spanned-shrinkwrap-001-ref.html": [
-    [
-     {}
-    ]
-   ],
    "css/css-grid/reference/display-grid-ref.html": [
     [
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@@ -262690,21 +262553,6 @@
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-   "css/css-text-decor/reference/text-decoration-underline-position-horizontal-ref.html": [
-    [
-     {}
-    ]
-   ],
-   "css/css-text-decor/reference/text-decoration-underline-position-vertical-ja-ref.html": [
-    [
-     {}
-    ]
-   ],
-   "css/css-text-decor/reference/text-decoration-underline-position-vertical-ref.html": [
-    [
-     {}
-    ]
-   ],
    "css/css-text-decor/reference/text-emphasis-color-001-ref.xht": [
     [
      {}
@@ -273570,11 +273418,6 @@
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    ],
-   "css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001-ref.html": [
-    [
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-    ]
-   ],
    "css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-inline-block-001-ref.html": [
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@@ -274780,11 +274623,6 @@
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-   "css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016-ref.html": [
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    "css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/position-absolute-containing-block-001-ref.html": [
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@@ -279670,7 +279508,7 @@
      {}
     ]
    ],
-   "feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html.headers": [
+   "feature-policy/experimental-features/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers": [
     [
      {}
     ]
@@ -279760,7 +279598,7 @@
      {}
     ]
    ],
-   "feature-policy/experimental-features/unsized-media.tentative.https.sub.html.headers": [
+   "feature-policy/experimental-features/unsized-image.tentative.https.sub.html.headers": [
     [
      {}
     ]
@@ -279895,16 +279733,6 @@
      {}
     ]
    ],
-   "feature-policy/reporting/vr-reporting.https.html.headers": [
-    [
-     {}
-    ]
-   ],
-   "feature-policy/reporting/xr-reporting.https.html.headers": [
-    [
-     {}
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-   ],
    "feature-policy/resources/autoplay.js": [
     [
      {}
@@ -289220,11 +289048,6 @@
      {}
     ]
    ],
-   "html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image-ref.html": [
-    [
-     {}
-    ]
-   ],
    "html/semantics/embedded-content/the-area-element/resources/area-download-click.html": [
     [
      {}
@@ -289770,11 +289593,6 @@
      {}
     ]
    ],
-   "html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers": [
-    [
-     {}
-    ]
-   ],
    "html/semantics/embedded-content/the-img-element/ismap/img-ismap-coordinates-iframe-after.html": [
     [
      {}
@@ -289830,11 +289648,6 @@
      {}
     ]
    ],
-   "html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers": [
-    [
-     {}
-    ]
-   ],
    "html/semantics/embedded-content/the-video-element/video_content-ref.htm": [
     [
      {}
@@ -292475,11 +292288,6 @@
      {}
     ]
    ],
-   "interfaces/css-device-adapt.idl": [
-    [
-     {}
-    ]
-   ],
    "interfaces/css-font-loading.idl": [
     [
      {}
@@ -292495,11 +292303,6 @@
      {}
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-   "interfaces/css-layout-api.idl": [
-    [
-     {}
-    ]
-   ],
    "interfaces/css-masking.idl": [
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@@ -292585,11 +292388,6 @@
      {}
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-   "interfaces/font-metrics-api.idl": [
-    [
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    "interfaces/fullscreen.idl": [
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@@ -294020,46 +293818,6 @@
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    "mixed-content/fetch-request/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers": [
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@@ -294305,86 +294063,6 @@
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    "mixed-content/object-tag/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers": [
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@@ -294635,326 +294313,6 @@
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    "testharness"
   ],
   "payment-request/PaymentMethodChangeEvent/methodDetails-attribute.https.html": [
-   "ec0aa96dddb46b26617064ab54e9d02e2a588cbb",
+   "a478c559d497e8dea9d471ce1e36427bfb741aa7",
    "testharness"
   ],
   "payment-request/PaymentMethodChangeEvent/methodName-attribute.https.html": [
-   "176638c7852f6f0f8fd7a8c3dfefdf439a829d22",
+   "e6e0bf9a91971b3a20acf59cf27097281f0d2085",
    "testharness"
   ],
   "payment-request/PaymentRequestUpdateEvent/constructor.http.html": [
@@ -643590,7 +640168,7 @@
    "testharness"
   ],
   "service-workers/service-worker/redirected-response.https.html": [
-   "176fcb494b664bae43feba0c793e52845df35257",
+   "05a94e2fd1dd13bc49dd34c00e0c1e5c110723a5",
    "testharness"
   ],
   "service-workers/service-worker/referer.https.html": [
@@ -644490,7 +641068,7 @@
    "support"
   ],
   "service-workers/service-worker/resources/redirect-worker.js": [
-   "bf0a3a8d9e0486f896e635e478dcd623dda987c0",
+   "5258c5e7be4578a4c783ccc659976acd399c6bf3",
    "support"
   ],
   "service-workers/service-worker/resources/redirect.py": [
@@ -645202,7 +641780,7 @@
    "testharness"
   ],
   "shadow-dom/ShadowRoot-interface.html": [
-   "bda361e5987d1c6461a0e6455975f948aa1791e0",
+   "6b49f93b3ec8ab73820573a9416a4852c83d718a",
    "testharness"
   ],
   "shadow-dom/Slotable-interface.html": [
@@ -645582,7 +642160,7 @@
    "testharness"
   ],
   "shadow-dom/untriaged/styles/test-003.html": [
-   "ab30e0cc67ae43262baea4305edf079ff6628368",
+   "d5b8f48ab319c2d6a619a4cb9e451210a5e39613",
    "testharness"
   ],
   "shadow-dom/untriaged/styles/test-005.html": [
@@ -649486,7 +646064,7 @@
    "support"
   ],
   "svg/linking/scripted/a-download-click.svg": [
-   "b728603d547582b15ff6b0d32bc39e8021fa2bae",
+   "406d0e6ba56681ea3026c74614fe79a83f3aa61e",
    "testharness"
   ],
   "svg/linking/scripted/a.rel-getter-01.svg": [
@@ -650333,6 +646911,10 @@
    "a23b0573853a53fe5520d8fa6aab02f80b53a18d",
    "support"
   ],
+  "tools/ci/ci_taskcluster.sh": [
+   "901ae520c7fe932f9dacf6a5234034b130659ea0",
+   "support"
+  ],
   "tools/ci/ci_tools_unittest.sh": [
    "eea6590f37aed7b5cbf6ac2d91ae1306f24e9c45",
    "support"
@@ -650373,16 +646955,12 @@
    "f049671c313b18200232f27d1abc75789a2e619d",
    "support"
   ],
-  "tools/ci/taskcluster-run.py": [
-   "45416501e0393405b53c00360ef3c3081a9df867",
-   "support"
-  ],
   "tools/ci/tcdownload.py": [
    "8813dccc888881ac8e96a05b22b113d887de0463",
    "support"
   ],
   "tools/ci/tests/test_jobs.py": [
-   "e94f4b6830555e70fa1f86db42927cbce207de17",
+   "e888ad884a18f257008fe860f31f7892b3bd39a3",
    "support"
   ],
   "tools/conftest.py": [
@@ -650398,7 +646976,7 @@
    "support"
   ],
   "tools/docker/start.sh": [
-   "9bf40ddb9301296e5f22c444ee8efb5bd8ea10d3",
+   "c2fd91d96d4dd1a42b72c48e5b477ec5c78174fd",
    "support"
   ],
   "tools/flake8.ini": [
@@ -651538,7 +648116,7 @@
    "support"
   ],
   "tools/serve/test_functional.py": [
-   "e423461f4810db07f20464ee13dffccc0851c5f2",
+   "87268ffc00d45f8bc57dc0fdd1e784eec745d288",
    "support"
   ],
   "tools/serve/test_serve.py": [
@@ -655534,7 +652112,7 @@
    "support"
   ],
   "tools/wpt/tests/test_wpt.py": [
-   "d0cb2b85c99e86e9bb039d29c0074a3df17c0afd",
+   "8f8e5186c7cf508f3ceb5f88a353f85f22f3ad27",
    "support"
   ],
   "tools/wpt/tox.ini": [
@@ -655986,7 +652564,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/testrunner.py": [
-   "90f7e4615e078840f9804f791422f9f2f3464a72",
+   "b4ce4381257121b4bb4850f46dcb447d3a81fac5",
    "support"
   ],
   "tools/wptrunner/wptrunner/tests/__init__.py": [
@@ -656022,7 +652600,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/tests/test_testloader.py": [
-   "7f1700ca879b96df1a1a6dd0f2345c488be02595",
+   "556b2b7f3fa48212fbf9c2b0279793f2ec48bacb",
    "support"
   ],
   "tools/wptrunner/wptrunner/tests/test_update.py": [
@@ -656338,11 +652916,11 @@
    "support"
   ],
   "tools/wptserve/tests/functional/test_input_file.py": [
-   "b3f0fba48abad1d600fe757a1d273146398609d7",
+   "014386e172fbb79de4554284e4c51dcaabaf70b4",
    "support"
   ],
   "tools/wptserve/tests/functional/test_pipes.py": [
-   "83b2c621641ca17b670eb5a8c08b38f8d37cc2a7",
+   "ebdbc3ee57ddfa50338938aa2e226028d7bb6555",
    "support"
   ],
   "tools/wptserve/tests/functional/test_request.py": [
@@ -656362,7 +652940,7 @@
    "support"
   ],
   "tools/wptserve/tests/test_config.py": [
-   "2ee8287710e91ed6908f94c3fb0a44cf1eae808b",
+   "9710342664f94ea0ac78159b0d8578dfba552820",
    "support"
   ],
   "tools/wptserve/tests/test_replacement_tokenizer.py": [
@@ -659214,7 +655792,7 @@
    "support"
   ],
   "web-locks/acquire.tentative.https.any.js": [
-   "ad2cfcd07e056eb5d21e89656f87225761c96f31",
+   "be0e837a89b47558de809c9463f08223bd0a3b97",
    "testharness"
   ],
   "web-locks/clientids.tentative.https.html": [
@@ -659226,35 +655804,43 @@
    "testharness"
   ],
   "web-locks/held.tentative.https.any.js": [
-   "7fc4c7354054c08a70e6b1ad050958c0303af5fa",
-   "testharness"
-  ],
-  "web-locks/idlharness.tentative.https.any.js": [
-   "168f57328b839ed7f9dbf17e98bbbd5deedc146a",
+   "151e3b35f7daeb636b07d10bb397fc977748640b",
    "testharness"
   ],
   "web-locks/ifAvailable.tentative.https.any.js": [
-   "cfd1004000acd561ccac59599f3a5ee482cf551e",
+   "a63caf6d588be03048c0821a5e742eb63af81edd",
+   "testharness"
+  ],
+  "web-locks/interfaces-serviceworker.tentative.https.html": [
+   "ca4d768546a60a57867756f1e3bd866ac522539e",
+   "testharness"
+  ],
+  "web-locks/interfaces.idl": [
+   "7c7d7c344df91ef7590bb982a72289dc6442fd8c",
+   "support"
+  ],
+  "web-locks/interfaces.tentative.https.any.js": [
+   "26b0bde2baf5e9d5286b008b34c8b0477d9fd10b",
    "testharness"
   ],
   "web-locks/lock-attributes.tentative.https.any.js": [
-   "d1c03103e0b7d7cf460b51e7cd974a7615c89955",
+   "e94fc95a1d4a2e3619f43d206ef529fc82abfd74",
    "testharness"
   ],
   "web-locks/mode-exclusive.tentative.https.any.js": [
-   "8450e237c3555a75b929d8b1c419678908628ddd",
+   "914046221998197543827487b60114b17e912ef4",
    "testharness"
   ],
   "web-locks/mode-mixed.tentative.https.any.js": [
-   "0dfa7e511e07d6351d0ba96cacc789933eb08e7a",
+   "3b304941862c37ced2ef6042889d11011aaa1db1",
    "testharness"
   ],
   "web-locks/mode-shared.tentative.https.any.js": [
-   "fc4a6012fab5675bcceafdd6f7d17b6bc5a67e64",
+   "7c8a8448befc9c345fd34b2cf2c1f609d7437ae2",
    "testharness"
   ],
   "web-locks/non-secure-context.tentative.any.js": [
-   "94553591f372492a1d1085d6edf23715872c0d83",
+   "e9726e6b4af02d3c72e03c5f6c1e036df843f4ce",
    "testharness"
   ],
   "web-locks/opaque-origin.tentative.https.html": [
@@ -659262,11 +655848,11 @@
    "testharness"
   ],
   "web-locks/query-empty.tentative.https.any.js": [
-   "88ffdb7f810d6d3e698a507da97220684ad3ecfe",
+   "fe7e0bb16ceb724ed2c2533461e16ce26310c9d3",
    "testharness"
   ],
   "web-locks/query-order.tentative.https.any.js": [
-   "3317cd02eb9a152f9a7be35b7052fcd082b752e9",
+   "1810a969171f03fdaa4a3a37262bed277f01f69f",
    "testharness"
   ],
   "web-locks/query.tentative.https.any.js": [
@@ -659274,7 +655860,7 @@
    "testharness"
   ],
   "web-locks/resource-names.tentative.https.any.js": [
-   "be7074bbb790a448df889a01b521c36291d571ab",
+   "dbcd986abd92a8dec71eb2102ad8d263017bbbfe",
    "testharness"
   ],
   "web-locks/resources/helpers.js": [
@@ -659285,6 +655871,10 @@
    "d3799f44f96b3456c2e42a3b791c12dbe4817c5d",
    "support"
   ],
+  "web-locks/resources/interfaces-serviceworker.js": [
+   "f75295c9f7bc72c43bf65c1c9a687f1c1a96e477",
+   "support"
+  ],
   "web-locks/resources/service-worker.js": [
    "027863e33e0457449173e82bc942c3ae22764eee",
    "support"
@@ -659298,21 +655888,17 @@
    "support"
   ],
   "web-locks/secure-context.tentative.https.any.js": [
-   "29ae7aea475f2db169718507431adb4c6ff78eeb",
+   "2e1d391204f3aaceb790812351d0963fc3748b76",
    "testharness"
   ],
   "web-locks/signal.tentative.https.any.js": [
-   "5b8acbbbebc52aa5da651a28dc57a1f0222be109",
+   "424b219dc52a835cc5b61f9fada525aafdafa62b",
    "testharness"
   ],
   "web-locks/steal.tentative.https.any.js": [
-   "7f9a53e0d631f5184fd8f46e2d88889489b19660",
+   "ca99137a969d97452fa06eb54ffe2f2f5c46302c",
    "testharness"
   ],
-  "web-locks/web-locks.idl": [
-   "351c1c5d822032702466d6a9ff94a2f76d646658",
-   "support"
-  ],
   "web-locks/workers.tentative.https.html": [
    "04af72c8ad04a940f289678f4bde41ee4cde9654",
    "testharness"
@@ -659933,10 +656519,6 @@
    "0a9966add85c6cdd35ce54eb05aae0986c5d9b8e",
    "testharness"
   ],
-  "webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html": [
-   "9d65d872b987943491cace95b8cdf729158fbd0d",
-   "testharness"
-  ],
   "webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-options.https.html": [
    "ea840ed11ad59bdcbb62773b43c4e404a2903233",
    "testharness"
@@ -659945,10 +656527,6 @@
    "4281f56379bb20f1e173c22c99ab208d2be0fdd4",
    "testharness"
   ],
-  "webaudio/the-audio-api/the-audioworklet-interface/processors/channel-count-processor.js": [
-   "556459f46b3074f03578c53ba7b967387bab071b",
-   "support"
-  ],
   "webaudio/the-audio-api/the-audioworklet-interface/processors/dummy-processor.js": [
    "11155d508c51956ee07dcf4cf7c68829920c2af6",
    "support"
@@ -661834,7 +658412,7 @@
    "testharness"
   ],
   "webrtc/RTCConfiguration-iceServers.html": [
-   "3f5c367d3ad98186461864b6b0bdecee3a07319e",
+   "6069c25af4accf7334f25f1bd30b687c2022aa6c",
    "testharness"
   ],
   "webrtc/RTCConfiguration-iceTransportPolicy.html": [
diff --git a/testing/web-platform/meta/background-fetch/fetch.https.window.js.ini b/testing/web-platform/meta/background-fetch/fetch.https.window.js.ini
index 43294fbdf07e..db7ffc5bdafb 100644
--- a/testing/web-platform/meta/background-fetch/fetch.https.window.js.ini
+++ b/testing/web-platform/meta/background-fetch/fetch.https.window.js.ini
@@ -17,6 +17,3 @@
   [Fetches can have requests with duplicate URLs]
     expected: FAIL
 
-  [Fetches can have requests with a body]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/cookie-store/cookieStore_get_set_across_frames.tentative.https.html.ini b/testing/web-platform/meta/cookie-store/cookieStore_get_set_across_frames.tentative.https.html.ini
deleted file mode 100644
index 15514ee27552..000000000000
--- a/testing/web-platform/meta/cookie-store/cookieStore_get_set_across_frames.tentative.https.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[cookieStore_get_set_across_frames.tentative.https.html]
-  [Async Cookies: cookieStore basic API across frames]
-    expected: FAIL
-
-  [cookieStore.get() sees cookieStore.set() in frame]
-    expected: FAIL
-
-  [cookieStore.get() in frame sees cookieStore.set()]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/cookie-store/cookieStore_get_set_across_origins.tentative.sub.https.html.ini b/testing/web-platform/meta/cookie-store/cookieStore_get_set_across_origins.tentative.sub.https.html.ini
deleted file mode 100644
index efd1b5440caa..000000000000
--- a/testing/web-platform/meta/cookie-store/cookieStore_get_set_across_origins.tentative.sub.https.html.ini
+++ /dev/null
@@ -1,14 +0,0 @@
-[cookieStore_get_set_across_origins.tentative.sub.https.html]
-  expected: TIMEOUT
-  [cookieStore.set in cross-origin iframe]
-    expected: TIMEOUT
-
-  [cookieStore.set in main window]
-    expected: NOTRUN
-
-  [cookieStore.get() in cross-origin frame sees cookieStore.set()]
-    expected: NOTRUN
-
-  [cookieStore.get() sees cookieStore.set() in cross-origin frame]
-    expected: TIMEOUT
-
diff --git a/testing/web-platform/meta/css/css-contain/contain-layout-cell-001.html.ini b/testing/web-platform/meta/css/css-contain/contain-layout-cell-001.html.ini
new file mode 100644
index 000000000000..a2cd740a8e7c
--- /dev/null
+++ b/testing/web-platform/meta/css/css-contain/contain-layout-cell-001.html.ini
@@ -0,0 +1,2 @@
+[contain-layout-cell-001.html]
+  expected: FAIL
diff --git a/testing/web-platform/meta/css/css-contain/contain-layout-cell-002.html.ini b/testing/web-platform/meta/css/css-contain/contain-layout-cell-002.html.ini
new file mode 100644
index 000000000000..d88da2762521
--- /dev/null
+++ b/testing/web-platform/meta/css/css-contain/contain-layout-cell-002.html.ini
@@ -0,0 +1,2 @@
+[contain-layout-cell-002.html]
+  expected: FAIL
diff --git a/testing/web-platform/meta/css/css-device-adapt/idlharness.html.ini b/testing/web-platform/meta/css/css-device-adapt/idlharness.html.ini
deleted file mode 100644
index f02e2d1351e0..000000000000
--- a/testing/web-platform/meta/css/css-device-adapt/idlharness.html.ini
+++ /dev/null
@@ -1,43 +0,0 @@
-[idlharness.html]
-  [CSSViewportRule interface: attribute style]
-    expected: FAIL
-
-  [CSSRule interface: cssViewportRule must inherit property "VIEWPORT_RULE" with the proper type]
-    expected: FAIL
-
-  [Stringification of cssViewportRule]
-    expected: FAIL
-
-  [CSSViewportRule must be primary interface of cssViewportRule]
-    expected: FAIL
-
-  [CSSViewportRule interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [CSSViewportRule interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [CSSViewportRule interface: cssViewportRule must inherit property "style" with the proper type]
-    expected: FAIL
-
-  [CSSViewportRule interface: existence and properties of interface object]
-    expected: FAIL
-
-  [CSSViewportRule interface object name]
-    expected: FAIL
-
-  [CSSRule interface: constant VIEWPORT_RULE on interface prototype object]
-    expected: FAIL
-
-  [CSSViewportRule interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [CSSRule interface: constant VIEWPORT_RULE on interface object]
-    expected: FAIL
-
-  [CSSRule interface: cssRule must inherit property "VIEWPORT_RULE" with the proper type]
-    expected: FAIL
-
-  [CSSViewportRule interface object length]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/css/css-fonts/format-specifiers-variations.html.ini b/testing/web-platform/meta/css/css-fonts/format-specifiers-variations.html.ini
index 60a5b7dbd63b..3a3d8dae167b 100644
--- a/testing/web-platform/meta/css/css-fonts/format-specifiers-variations.html.ini
+++ b/testing/web-platform/meta/css/css-fonts/format-specifiers-variations.html.ini
@@ -1,13 +1,11 @@
 [format-specifiers-variations.html]
-  expected:
-    if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): TIMEOUT
   [Load Ahem with format woff-variations]
     expected:
       if os == "win": FAIL
       if os == "mac": FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
       if debug and not webrender and not e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
+      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
@@ -19,7 +17,7 @@
       if os == "mac": FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
       if debug and not webrender and not e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
+      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
@@ -31,7 +29,7 @@
       if os == "mac": FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
       if debug and not webrender and not e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
+      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
@@ -43,185 +41,9 @@
       if os == "mac": FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
       if debug and not webrender and not e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
+      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): FAIL
       if not debug and not webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86") and (bits == 32): FAIL
 
-  [Do not load Ahem with format opentype-variatio]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format entype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format truetye-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyzopentype-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format truetype-variationsxyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff-ariations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff-variatio]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format opntype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff2-variationsxyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyzopentype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format opentypexyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format opentye-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format ff-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff2variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format uetype-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyzwoff]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format tretype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Load Ahem with format truetype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woffxyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff2xyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format truetype-variatio]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format uetype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Load Ahem with format opentype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format opentype-variationsxyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format openty]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format entype-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff2-variatio]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format ff]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format wff2]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyztruetype-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Load Ahem with format woff]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): TIMEOUT
-
-  [Do not load Ahem with format truetypexyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyzwoff-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format wof]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyztruetype]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyzwoff2]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format xyzwoff2-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format wo]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Load Ahem with format woff2]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format woff-variationsxyz]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format ff2]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format truety]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format wff]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
-  [Do not load Ahem with format ff2-variations]
-    expected:
-      if debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): NOTRUN
-
diff --git a/testing/web-platform/meta/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html.ini b/testing/web-platform/meta/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html.ini
deleted file mode 100644
index 026ad5d3c5d5..000000000000
--- a/testing/web-platform/meta/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[grid-percent-rows-filled-shrinkwrap-001.html]
-  expected: FAIL
diff --git a/testing/web-platform/meta/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html.ini b/testing/web-platform/meta/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html.ini
deleted file mode 100644
index 53898e9abc98..000000000000
--- a/testing/web-platform/meta/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[grid-percent-rows-spanned-shrinkwrap-001.html]
-  expected: FAIL
diff --git a/testing/web-platform/meta/css/css-text-decor/text-decoration-underline-position-vertical-ja.html.ini b/testing/web-platform/meta/css/css-text-decor/text-decoration-underline-position-vertical-ja.html.ini
deleted file mode 100644
index 2c69ffca92c5..000000000000
--- a/testing/web-platform/meta/css/css-text-decor/text-decoration-underline-position-vertical-ja.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[text-decoration-underline-position-vertical-ja.html]
-  expected: FAIL
diff --git a/testing/web-platform/meta/css/css-text-decor/text-decoration-underline-position-vertical.html.ini b/testing/web-platform/meta/css/css-text-decor/text-decoration-underline-position-vertical.html.ini
deleted file mode 100644
index cfdff6ecde1a..000000000000
--- a/testing/web-platform/meta/css/css-text-decor/text-decoration-underline-position-vertical.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[text-decoration-underline-position-vertical.html]
-  expected: FAIL
diff --git a/testing/web-platform/meta/css/selectors/scope-selector.html.ini b/testing/web-platform/meta/css/selectors/scope-selector.html.ini
index 3d9df1fe8959..1f83cda91544 100644
--- a/testing/web-platform/meta/css/selectors/scope-selector.html.ini
+++ b/testing/web-platform/meta/css/selectors/scope-selector.html.ini
@@ -5,18 +5,3 @@
   [Selecting direct child of shadow root with :scope should work]
     expected: FAIL
 
-  [Selecting direct child of document fragment with :scope should work]
-    expected: FAIL
-
-  [Selecting descendants of nested shadow root with :scope should work]
-    expected: FAIL
-
-  [Selecting descendants of document fragment with :scope should work]
-    expected: FAIL
-
-  [Selecting direct child of nested shadow root with :scope should work]
-    expected: FAIL
-
-  [Selecting descendants in and outside of shadow tree with :scope /deep/ should work]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html.ini b/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html.ini
new file mode 100644
index 000000000000..cb8f8bb714a6
--- /dev/null
+++ b/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html.ini
@@ -0,0 +1,2 @@
+[contain-layout-formatting-context-margin-001.html]
+  expected: FAIL
diff --git a/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-position-svg-001o.html.ini b/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-position-svg-001o.html.ini
index 135a02d147ed..913ecc0fd7d7 100644
--- a/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-position-svg-001o.html.ini
+++ b/testing/web-platform/meta/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-position-svg-001o.html.ini
@@ -1,2 +1,4 @@
 [object-position-svg-001o.html]
-  expected: FAIL
+  expected:
+    if not debug and webrender and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): PASS
+    FAIL
diff --git a/testing/web-platform/meta/feature-policy/experimental-features/intrinsicSize-with-responsive-images.tentative.https.sub.html.ini b/testing/web-platform/meta/feature-policy/experimental-features/intrinsicSize-with-responsive-images.tentative.https.sub.html.ini
new file mode 100644
index 000000000000..1b984bf700f1
--- /dev/null
+++ b/testing/web-platform/meta/feature-policy/experimental-features/intrinsicSize-with-responsive-images.tentative.https.sub.html.ini
@@ -0,0 +1,40 @@
+[intrinsicSize-with-responsive-images.tentative.https.sub.html]
+  [Test image /feature-policy/experimental-features/resources/image.png with width = 800, height = 800, and no specified sizes]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.jpg with sizes = 100, width = 100, and srcset descriptor = 100w]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.jpg with width = 800, no specified sizes, or height]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.jpg with no specified sizes, width, or height]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.svg with sizes = 100, width = 100, and srcset descriptor = 100w]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.svg with width = 800, no specified sizes, or height]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.jpg with width = 800, height = 800, and no specified sizes]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.png with sizes = 100, width = 100, and srcset descriptor = 100w]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.png with width = 800, no specified sizes, or height]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.png with no specified sizes, width, or height]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.svg with width = 800, height = 800, and no specified sizes]
+    expected: FAIL
+
+  [Test image /feature-policy/experimental-features/resources/image.svg with no specified sizes, width, or height]
+    expected: FAIL
+
+  [Test image (32 x 32) with sizes = 100 and srcset descriptor = 32w]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html.ini b/testing/web-platform/meta/feature-policy/experimental-features/intrinsicSize-without-unsized-media.tentative.https.sub.html.ini
similarity index 84%
rename from testing/web-platform/meta/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html.ini
rename to testing/web-platform/meta/feature-policy/experimental-features/intrinsicSize-without-unsized-media.tentative.https.sub.html.ini
index 7cd79adeba15..9494ec7caed2 100644
--- a/testing/web-platform/meta/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html.ini
+++ b/testing/web-platform/meta/feature-policy/experimental-features/intrinsicSize-without-unsized-media.tentative.https.sub.html.ini
@@ -1,13 +1,13 @@
-[intrinsicsize-with-unsized-media.tentative.https.sub.html]
+[intrinsicSize-without-unsized-media.tentative.https.sub.html]
   [Test image with src=/feature-policy/experimental-features/resources/image.svg]
     expected: FAIL
 
-  [Test video]
-    expected: FAIL
-
   [Test image with src=/feature-policy/experimental-features/resources/image.jpg]
     expected: FAIL
 
   [Test image with src=/feature-policy/experimental-features/resources/image.png]
     expected: FAIL
 
+  [Test video]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/feature-policy/experimental-features/unsized-media.tentative.https.sub.html.ini b/testing/web-platform/meta/feature-policy/experimental-features/unsized-image.tentative.https.sub.html.ini
similarity index 79%
rename from testing/web-platform/meta/feature-policy/experimental-features/unsized-media.tentative.https.sub.html.ini
rename to testing/web-platform/meta/feature-policy/experimental-features/unsized-image.tentative.https.sub.html.ini
index 0aeb57306740..c3fc2798293a 100644
--- a/testing/web-platform/meta/feature-policy/experimental-features/unsized-media.tentative.https.sub.html.ini
+++ b/testing/web-platform/meta/feature-policy/experimental-features/unsized-image.tentative.https.sub.html.ini
@@ -1,8 +1,35 @@
-[unsized-media.tentative.https.sub.html]
-  [Test image size is correctly rendered in iframe of src https://www.web-platform.test:8443/feature-policy/experimental-features/resources/feature-policy-image.html]
+[unsized-image.tentative.https.sub.html]
+  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
     expected: FAIL
 
-  [Test video with attribute style=width:500px; and attribute undefined=undefined]
+  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
+    expected: FAIL
+
+  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
+    expected: FAIL
+
+  [Test video with attribute undefined=undefined and attribute undefined=undefined]
+    expected: FAIL
+
+  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
+    expected: FAIL
+
+  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
+    expected: FAIL
+
+  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
+    expected: FAIL
+
+  [Test video with attribute width=500 and attribute undefined=undefined]
+    expected: FAIL
+
+  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
+    expected: FAIL
+
+  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
+    expected: FAIL
+
+  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
     expected: FAIL
 
   [Test video with attribute height=800 and attribute undefined=undefined]
@@ -14,54 +41,42 @@
   [Test image with attribute style=width:500px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
     expected: FAIL
 
+  [Test image with attribute style=width:500px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
+    expected: FAIL
+
+  [Test video with attribute style=width:500px; and attribute undefined=undefined]
+    expected: FAIL
+
   [Test image with attribute style=height:800px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
     expected: FAIL
 
   [Test image with attribute style=height:800px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
     expected: FAIL
 
-  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
-    expected: FAIL
-
-  [Test image with attribute style=width:500px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
+  [Test image with attribute style=height:800px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
     expected: FAIL
 
   [Test video with attribute style=height:800px; and attribute undefined=undefined]
     expected: FAIL
 
-  [Test image with attribute style=height:800px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
-    expected: FAIL
-
-  [Test video with attribute undefined=undefined and attribute undefined=undefined]
-    expected: FAIL
-
-  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
-    expected: FAIL
-
-  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
-    expected: FAIL
-
-  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.png]
-    expected: FAIL
-
-  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
-    expected: FAIL
-
-  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
-    expected: FAIL
-
-  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
-    expected: FAIL
-
-  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.jpg]
-    expected: FAIL
-
-  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.svg]
-    expected: FAIL
-
   [Test image size is correctly rendered in iframe of src /feature-policy/experimental-features/resources/feature-policy-image.html]
     expected: FAIL
 
-  [Test video with attribute width=500 and attribute undefined=undefined]
+  [Test image size is correctly rendered in iframe of src https://www.web-platform.test:8443/feature-policy/experimental-features/resources/feature-policy-image.html]
+    expected: FAIL
+
+  [Test image with attribute width=500 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.bmp]
+    expected: FAIL
+
+  [Test image with attribute undefined=undefined and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.bmp]
+    expected: FAIL
+
+  [Test image with attribute height=800 and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.bmp]
+    expected: FAIL
+
+  [Test image with attribute style=width:500px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.bmp]
+    expected: FAIL
+
+  [Test image with attribute style=height:800px; and attribute undefined=undefined on src /feature-policy/experimental-features/resources/image.bmp]
     expected: FAIL
 
diff --git a/testing/web-platform/meta/feature-policy/reporting/vr-reporting.https.html.ini b/testing/web-platform/meta/feature-policy/reporting/vr-reporting.https.html.ini
deleted file mode 100644
index da206dc38fc0..000000000000
--- a/testing/web-platform/meta/feature-policy/reporting/vr-reporting.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[vr-reporting.https.html]
-  [VR Report Format]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/feature-policy/reporting/xr-reporting.https.html.ini b/testing/web-platform/meta/feature-policy/reporting/xr-reporting.https.html.ini
deleted file mode 100644
index 95d4887d8439..000000000000
--- a/testing/web-platform/meta/feature-policy/reporting/xr-reporting.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[xr-reporting.https.html]
-  [XR Report Format]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/fullscreen/api/element-request-fullscreen-options.html.ini b/testing/web-platform/meta/fullscreen/api/element-request-fullscreen-options.html.ini
deleted file mode 100644
index e87ab71923d8..000000000000
--- a/testing/web-platform/meta/fullscreen/api/element-request-fullscreen-options.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[element-request-fullscreen-options.html]
-  [Element#requestFullscreen({ navigationUI }) support]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/fullscreen/idlharness.window.js.ini b/testing/web-platform/meta/fullscreen/idlharness.window.js.ini
index 5048ced86448..7960dd151bed 100644
--- a/testing/web-platform/meta/fullscreen/idlharness.window.js.ini
+++ b/testing/web-platform/meta/fullscreen/idlharness.window.js.ini
@@ -2,6 +2,3 @@
   [Document interface: operation exitFullscreen()]
     expected: FAIL
 
-  [Element interface: operation requestFullscreen(FullscreenOptions)]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html.ini b/testing/web-platform/meta/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html.ini
deleted file mode 100644
index ef6388b94caa..000000000000
--- a/testing/web-platform/meta/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[intrinsicsize-svg-image.tentative.html]
-  expected: FAIL
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/the-audio-element/audio_001.htm.ini b/testing/web-platform/meta/html/semantics/embedded-content/the-audio-element/audio_001.htm.ini
deleted file mode 100644
index 9aae505f917f..000000000000
--- a/testing/web-platform/meta/html/semantics/embedded-content/the-audio-element/audio_001.htm.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[audio_001.htm]
-  restart-after: true
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-with-responsive-images.tentative.html.ini b/testing/web-platform/meta/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-with-responsive-images.tentative.html.ini
deleted file mode 100644
index 7d7986202752..000000000000
--- a/testing/web-platform/meta/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-with-responsive-images.tentative.html.ini
+++ /dev/null
@@ -1,22 +0,0 @@
-[intrinsicsize-with-responsive-images.tentative.html]
-  [Test image /images/green.png with no specified sizes, width, or height]
-    expected: FAIL
-
-  [Test image /images/green.svg with no specified sizes, width, or height]
-    expected: FAIL
-
-  [Test image /images/green.svg with width = 800, height = 800, and no specified sizes]
-    expected: FAIL
-
-  [Test image (32 x 32) with sizes = 100 and srcset descriptor = 32w]
-    expected: FAIL
-
-  [Test image /images/green.svg with width = 800, no specified sizes, or height]
-    expected: FAIL
-
-  [Test image /images/green.png with width = 800, height = 800, and no specified sizes]
-    expected: FAIL
-
-  [Test image /images/green.png with width = 800, no specified sizes, or height]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.ini b/testing/web-platform/meta/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.ini
deleted file mode 100644
index 1e30aea03b99..000000000000
--- a/testing/web-platform/meta/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.ini
+++ /dev/null
@@ -1,7 +0,0 @@
-[intrinsicsize-without-unsized-media.tentative.https.sub.html]
-  [Test intrinsicsize for html image element, src=/images/green.svg]
-    expected: FAIL
-
-  [Test intrinsicsize for html image element, src=/images/green.png]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.ini b/testing/web-platform/meta/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.ini
deleted file mode 100644
index ed78896270c6..000000000000
--- a/testing/web-platform/meta/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[intrinsicsize-without-unsized-media.tentative.https.sub.html]
-  [Test intrinsicsize for html video element]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mediacapture-image/getPhotoCapabilities.html.ini b/testing/web-platform/meta/mediacapture-image/getPhotoCapabilities.html.ini
index 6abbc9367704..2bf5516fe4f9 100644
--- a/testing/web-platform/meta/mediacapture-image/getPhotoCapabilities.html.ini
+++ b/testing/web-platform/meta/mediacapture-image/getPhotoCapabilities.html.ini
@@ -5,6 +5,3 @@
   [getPhotoCapabilities() of an ended Track should throw "InvalidStateError"]
     expected: FAIL
 
-  [throw "OperationError" when the MediaStreamTrack is stopped while getting photo capabilities]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mediacapture-image/getPhotoSettings.html.ini b/testing/web-platform/meta/mediacapture-image/getPhotoSettings.html.ini
index 256ad3848cdd..8580642b6d8f 100644
--- a/testing/web-platform/meta/mediacapture-image/getPhotoSettings.html.ini
+++ b/testing/web-platform/meta/mediacapture-image/getPhotoSettings.html.ini
@@ -5,6 +5,3 @@
   [getPhotoSettings() of an ended Track should throw "InvalidStateError"]
     expected: FAIL
 
-  [throw "OperationError" when the MediaStreamTrack is stopped while getting photo settings]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index f269351cd089..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: http-csp\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index b9dd10392253..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: http-csp\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index 8aec701bd1a9..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: http-csp\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: swap-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index a20d1a6527dd..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index b4e34ef58d67..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index b07ed9ad4f21..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: swap-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index ebbc2de1edb9..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: meta-csp\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index 13057d5aef9c..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[opt-in-blocks.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 83e4034241e1..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[no-opt-in-blocks.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index a07bfe5129e9..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[no-opt-in-blocks.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index c51aaeee042e..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[no-opt-in-blocks.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: cross-origin-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: swap-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 1f74fee1bdea..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[no-opt-in-blocks.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index f204f293e058..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[no-opt-in-blocks.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 1a6b6f97c94b..000000000000
--- a/testing/web-platform/meta/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[no-opt-in-blocks.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-http\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: swap-scheme-redirect\n                                 subresource: classic-data-worker-fetch\n                                 expectation: blocked]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 1756c8e1a45d..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[allowed.https.html]
-  expected: ERROR
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: module-data-worker-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index bab471438385..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[allowed.https.html]
-  expected: ERROR
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: module-data-worker-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
deleted file mode 100644
index e5dd8ce5d2ce..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 784b75e76849..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[allowed.https.html]
-  expected: ERROR
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: module-data-worker-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 093afeb87062..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[no-opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 093afeb87062..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[no-opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 093afeb87062..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[no-opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 093afeb87062..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[no-opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 093afeb87062..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[no-opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
deleted file mode 100644
index 093afeb87062..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[no-opt-in-blocks.https.html]
-  expected: ERROR
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 7663a409074a..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[allowed.https.html]
-  expected: ERROR
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: module-data-worker-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 544b10c9f0be..000000000000
--- a/testing/web-platform/meta/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[allowed.https.html]
-  expected: ERROR
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: module-data-worker-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 257f1c6659db..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-animation-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index d93c9155818d..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-animation-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 4487f89a663c..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-animation-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 00bba7dd9c4a..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-animation-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index e4779ea15f88..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-animation-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 5561ec336526..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-animation-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 6494db14f8e5..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-animation-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index bfefbcb3f2a7..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-animation-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index b84f146ddd86..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-animation-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 546807209667..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-animation-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 035068db6908..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-audio-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index c9533ee6cad8..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-audio-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 2b20baae9508..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-audio-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index bd491b6123ee..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-audio-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index aafdf1838417..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-audio-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index e637fdbbc4c8..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-audio-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index c809153ed546..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-audio-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 3319978ac1ae..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-audio-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 740da7fc353b..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-audio-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index ae8831ea7ac1..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-audio-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index ddc706d586e6..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-layout-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index e7cb383800fe..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-layout-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 2b20ed60cd12..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-layout-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 0a92702b4f1d..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-layout-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 529e886dccfc..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-layout-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 5a192fec1521..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-layout-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 23c39ac2a1a0..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-layout-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index bde308c5a03d..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-layout-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 6f8ed1ad2e6d..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-layout-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index a752f37c73ae..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-layout-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index a38bbd69a7cc..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-paint-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 57d3ddf2c2dc..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-paint-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index eeee257f9340..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-paint-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index e7272b210d59..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-paint-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 75b9e09a77ee..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-paint-data-import\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 375df1692e6a..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-paint-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index fd6e68ce189f..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: http-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-paint-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 2617851e84a5..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: meta-csp\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-paint-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index bcdbffa489a2..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: keep-scheme-redirect\n                                 subresource: worklet-paint-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini b/testing/web-platform/meta/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
deleted file mode 100644
index 68e6edc8337d..000000000000
--- a/testing/web-platform/meta/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[allowed.https.html]
-  [opt_in_method: no-opt-in\n                                 origin: same-host-https\n                                 source_scheme: https\n                                 context_nesting: top-level\n                                 redirection: no-redirect\n                                 subresource: worklet-paint-top-level\n                                 expectation: allowed]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/mozilla-sync b/testing/web-platform/meta/mozilla-sync
index af46725a202c..78a7c12d74f1 100644
--- a/testing/web-platform/meta/mozilla-sync
+++ b/testing/web-platform/meta/mozilla-sync
@@ -1,2 +1,2 @@
-local: d6420f70deb500c16afdd24b235838b8eb2f71b8
-upstream: 6c902e426c9f9a0e78c6fe36e27d05b5cf38e506
+local: 87a06e094ed2f78b9fe422c824a9dcb16fbff9c6
+upstream: 5ef977c0087a9f1d970bf229f1130799b0c09010
diff --git a/testing/web-platform/meta/payment-request/MerchantValidationEvent/complete-method.https.html.ini b/testing/web-platform/meta/payment-request/MerchantValidationEvent/complete-method.https.html.ini
deleted file mode 100644
index a137612c47e7..000000000000
--- a/testing/web-platform/meta/payment-request/MerchantValidationEvent/complete-method.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[complete-method.https.html]
-  [If event's isTrusted attribute is false, then then throw an InvalidStateError DOMException.]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/payment-request/MerchantValidationEvent/constructor.https.html.ini b/testing/web-platform/meta/payment-request/MerchantValidationEvent/constructor.https.html.ini
index 5f0f8e64694a..57facfc29f65 100644
--- a/testing/web-platform/meta/payment-request/MerchantValidationEvent/constructor.https.html.ini
+++ b/testing/web-platform/meta/payment-request/MerchantValidationEvent/constructor.https.html.ini
@@ -20,15 +20,3 @@
   [Must throw TypeError if initialized with an invalid URL.]
     expected: FAIL
 
-  [When no methodName is passed, methodName attribute defaults to the empty string]
-    expected: FAIL
-
-  [MerchantValidationEvent can be constructed with valid PMIs]
-    expected: FAIL
-
-  [MerchantValidationEvent can't be constructed with invalid PMIs]
-    expected: FAIL
-
-  [Must have a methodName IDL attribute, which is initialized with to the methodName dictionary value.]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/acquire.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/acquire.tentative.https.any.js.ini
index 9b29740f8d7e..a5fb8d9abacf 100644
--- a/testing/web-platform/meta/web-locks/acquire.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/acquire.tentative.https.any.js.ini
@@ -61,67 +61,3 @@
   [Returned Promise rejects if callback throws asynchronously]
     expected: FAIL
 
-
-[acquire.tentative.https.any.sharedworker.html]
-  [Returned Promise rejects if callback throws synchronously]
-    expected: FAIL
-
-  [The 'steal' option must be used with exclusive locks]
-    expected: FAIL
-
-  [The 'signal' and 'ifAvailable' options are mutually exclusive]
-    expected: FAIL
-
-  [navigator.locks.request's returned promise resolves after lock is released]
-    expected: FAIL
-
-  [mode must be "shared" or "exclusive"]
-    expected: FAIL
-
-  [The 'signal' and 'steal' options are mutually exclusive]
-    expected: FAIL
-
-  [navigator.locks.request requires a name and a callback]
-    expected: FAIL
-
-  [The 'steal' and 'ifAvailable' options are mutually exclusive]
-    expected: FAIL
-
-  [callback must be a function]
-    expected: FAIL
-
-  [Returned Promise rejects if callback throws asynchronously]
-    expected: FAIL
-
-
-[acquire.tentative.https.any.serviceworker.html]
-  [Returned Promise rejects if callback throws synchronously]
-    expected: FAIL
-
-  [The 'steal' option must be used with exclusive locks]
-    expected: FAIL
-
-  [The 'signal' and 'ifAvailable' options are mutually exclusive]
-    expected: FAIL
-
-  [navigator.locks.request's returned promise resolves after lock is released]
-    expected: FAIL
-
-  [mode must be "shared" or "exclusive"]
-    expected: FAIL
-
-  [The 'signal' and 'steal' options are mutually exclusive]
-    expected: FAIL
-
-  [navigator.locks.request requires a name and a callback]
-    expected: FAIL
-
-  [The 'steal' and 'ifAvailable' options are mutually exclusive]
-    expected: FAIL
-
-  [callback must be a function]
-    expected: FAIL
-
-  [Returned Promise rejects if callback throws asynchronously]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/held.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/held.tentative.https.any.js.ini
index 991983c7bc4e..fad6f5b02a05 100644
--- a/testing/web-platform/meta/web-locks/held.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/held.tentative.https.any.js.ini
@@ -25,31 +25,3 @@
   [held lock prevents the same client from acquiring it]
     expected: FAIL
 
-
-[held.tentative.https.any.sharedworker.html]
-  [callback's result is promisified if not async]
-    expected: FAIL
-
-  [lock is held until callback's returned promise rejects]
-    expected: FAIL
-
-  [lock is held until callback's returned promise resolves]
-    expected: FAIL
-
-  [held lock prevents the same client from acquiring it]
-    expected: FAIL
-
-
-[held.tentative.https.any.serviceworker.html]
-  [callback's result is promisified if not async]
-    expected: FAIL
-
-  [lock is held until callback's returned promise rejects]
-    expected: FAIL
-
-  [lock is held until callback's returned promise resolves]
-    expected: FAIL
-
-  [held lock prevents the same client from acquiring it]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/idlharness.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/idlharness.tentative.https.any.js.ini
deleted file mode 100644
index d8bee63965c0..000000000000
--- a/testing/web-platform/meta/web-locks/idlharness.tentative.https.any.js.ini
+++ /dev/null
@@ -1,367 +0,0 @@
-[idlharness.tentative.https.any.serviceworker.html]
-  [LockManager interface: operation request(DOMString, LockGrantedCallback)]
-    expected: FAIL
-
-  [LockManager interface: operation query()]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [WorkerNavigator interface: navigator must inherit property "locks" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface object]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "name" with the proper type]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "query()" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [Lock must be primary interface of lock]
-    expected: FAIL
-
-  [LockManager interface: operation request(DOMString, LockOptions, LockGrantedCallback)]
-    expected: FAIL
-
-  [Lock interface: attribute name]
-    expected: FAIL
-
-  [LockManager interface object length]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [WorkerNavigator interface: attribute locks]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface object]
-    expected: FAIL
-
-  [Lock interface object name]
-    expected: FAIL
-
-  [Lock interface object length]
-    expected: FAIL
-
-  [LockManager must be primary interface of navigator.locks]
-    expected: FAIL
-
-  [LockManager interface object name]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockOptions, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Stringification of lock]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "mode" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockOptions, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Stringification of navigator.locks]
-    expected: FAIL
-
-  [Lock interface: attribute mode]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-
-[idlharness.tentative.https.any.sharedworker.html]
-  [LockManager interface: operation request(DOMString, LockGrantedCallback)]
-    expected: FAIL
-
-  [LockManager interface: operation query()]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [WorkerNavigator interface: navigator must inherit property "locks" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface object]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "name" with the proper type]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "query()" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [Lock must be primary interface of lock]
-    expected: FAIL
-
-  [LockManager interface: operation request(DOMString, LockOptions, LockGrantedCallback)]
-    expected: FAIL
-
-  [Lock interface: attribute name]
-    expected: FAIL
-
-  [LockManager interface object length]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [WorkerNavigator interface: attribute locks]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface object]
-    expected: FAIL
-
-  [Lock interface object name]
-    expected: FAIL
-
-  [Lock interface object length]
-    expected: FAIL
-
-  [LockManager must be primary interface of navigator.locks]
-    expected: FAIL
-
-  [LockManager interface object name]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockOptions, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Stringification of lock]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "mode" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockOptions, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Stringification of navigator.locks]
-    expected: FAIL
-
-  [Lock interface: attribute mode]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-
-[idlharness.tentative.https.any.html]
-  [LockManager interface: operation request(DOMString, LockGrantedCallback)]
-    expected: FAIL
-
-  [LockManager interface: operation query()]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [Navigator interface: navigator must inherit property "locks" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface object]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "name" with the proper type]
-    expected: FAIL
-
-  [Navigator interface: attribute locks]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "query()" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [Lock must be primary interface of lock]
-    expected: FAIL
-
-  [LockManager interface: operation request(DOMString, LockOptions, LockGrantedCallback)]
-    expected: FAIL
-
-  [Lock interface: attribute name]
-    expected: FAIL
-
-  [LockManager interface object length]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface object]
-    expected: FAIL
-
-  [Lock interface object name]
-    expected: FAIL
-
-  [Lock interface object length]
-    expected: FAIL
-
-  [LockManager must be primary interface of navigator.locks]
-    expected: FAIL
-
-  [LockManager interface object name]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockOptions, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Stringification of lock]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "mode" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockOptions, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Stringification of navigator.locks]
-    expected: FAIL
-
-  [Lock interface: attribute mode]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-
-[idlharness.tentative.https.any.worker.html]
-  [LockManager interface: operation request(DOMString, LockGrantedCallback)]
-    expected: FAIL
-
-  [LockManager interface: operation query()]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [WorkerNavigator interface: navigator must inherit property "locks" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface object]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "name" with the proper type]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "query()" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [Lock must be primary interface of lock]
-    expected: FAIL
-
-  [LockManager interface: operation request(DOMString, LockOptions, LockGrantedCallback)]
-    expected: FAIL
-
-  [Lock interface: attribute name]
-    expected: FAIL
-
-  [LockManager interface object length]
-    expected: FAIL
-
-  [LockManager interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [WorkerNavigator interface: attribute locks]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface object]
-    expected: FAIL
-
-  [Lock interface object name]
-    expected: FAIL
-
-  [Lock interface object length]
-    expected: FAIL
-
-  [LockManager must be primary interface of navigator.locks]
-    expected: FAIL
-
-  [LockManager interface object name]
-    expected: FAIL
-
-  [LockManager interface: navigator.locks must inherit property "request(DOMString, LockOptions, LockGrantedCallback)" with the proper type]
-    expected: FAIL
-
-  [Stringification of lock]
-    expected: FAIL
-
-  [Lock interface: lock must inherit property "mode" with the proper type]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockOptions, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Stringification of navigator.locks]
-    expected: FAIL
-
-  [Lock interface: attribute mode]
-    expected: FAIL
-
-  [LockManager interface: calling request(DOMString, LockGrantedCallback) on navigator.locks with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [Lock interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/ifAvailable.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/ifAvailable.tentative.https.any.js.ini
index cc799f1a9934..00db5cdfd517 100644
--- a/testing/web-platform/meta/web-locks/ifAvailable.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/ifAvailable.tentative.https.any.js.ini
@@ -61,67 +61,3 @@
   [Lock request with ifAvailable - lock available]
     expected: FAIL
 
-
-[ifAvailable.tentative.https.any.serviceworker.html]
-  [Returned Promise rejects if callback throws synchronously]
-    expected: FAIL
-
-  [Shared lock request with ifAvailable - exclusive lock held]
-    expected: FAIL
-
-  [Locks are available once previous release is processed]
-    expected: FAIL
-
-  [Lock request with ifAvailable - lock not available, callback throws]
-    expected: FAIL
-
-  [Exclusive lock request with ifAvailable - shared lock held]
-    expected: FAIL
-
-  [Returned Promise rejects if async callback yields rejected promise]
-    expected: FAIL
-
-  [Lock request with ifAvailable - lock not available]
-    expected: FAIL
-
-  [Lock request with ifAvailable - unrelated lock held]
-    expected: FAIL
-
-  [Shared lock request with ifAvailable - shared lock held]
-    expected: FAIL
-
-  [Lock request with ifAvailable - lock available]
-    expected: FAIL
-
-
-[ifAvailable.tentative.https.any.sharedworker.html]
-  [Returned Promise rejects if callback throws synchronously]
-    expected: FAIL
-
-  [Shared lock request with ifAvailable - exclusive lock held]
-    expected: FAIL
-
-  [Locks are available once previous release is processed]
-    expected: FAIL
-
-  [Lock request with ifAvailable - lock not available, callback throws]
-    expected: FAIL
-
-  [Exclusive lock request with ifAvailable - shared lock held]
-    expected: FAIL
-
-  [Returned Promise rejects if async callback yields rejected promise]
-    expected: FAIL
-
-  [Lock request with ifAvailable - lock not available]
-    expected: FAIL
-
-  [Lock request with ifAvailable - unrelated lock held]
-    expected: FAIL
-
-  [Shared lock request with ifAvailable - shared lock held]
-    expected: FAIL
-
-  [Lock request with ifAvailable - lock available]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/interfaces-serviceworker.tentative.https.html.ini b/testing/web-platform/meta/web-locks/interfaces-serviceworker.tentative.https.html.ini
new file mode 100644
index 000000000000..a9633047a173
--- /dev/null
+++ b/testing/web-platform/meta/web-locks/interfaces-serviceworker.tentative.https.html.ini
@@ -0,0 +1,4 @@
+[interfaces-serviceworker.tentative.https.html]
+  [Interface test]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/web-locks/interfaces.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/interfaces.tentative.https.any.js.ini
new file mode 100644
index 000000000000..6d4a53058c86
--- /dev/null
+++ b/testing/web-platform/meta/web-locks/interfaces.tentative.https.any.js.ini
@@ -0,0 +1,15 @@
+[interfaces.tentative.https.any.html]
+  [Untitled]
+    expected: FAIL
+
+  [interfaces]
+    expected: FAIL
+
+
+[interfaces.tentative.https.any.worker.html]
+  [Untitled]
+    expected: FAIL
+
+  [interfaces]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/web-locks/lock-attributes.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/lock-attributes.tentative.https.any.js.ini
index 8c7997594530..50f1fdcabf0c 100644
--- a/testing/web-platform/meta/web-locks/lock-attributes.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/lock-attributes.tentative.https.any.js.ini
@@ -13,19 +13,3 @@
   [Lock attributes reflect requested properties (exclusive)]
     expected: FAIL
 
-
-[lock-attributes.tentative.https.any.serviceworker.html]
-  [Lock attributes reflect requested properties (shared)]
-    expected: FAIL
-
-  [Lock attributes reflect requested properties (exclusive)]
-    expected: FAIL
-
-
-[lock-attributes.tentative.https.any.sharedworker.html]
-  [Lock attributes reflect requested properties (shared)]
-    expected: FAIL
-
-  [Lock attributes reflect requested properties (exclusive)]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/mode-exclusive.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/mode-exclusive.tentative.https.any.js.ini
index 27534aebeb16..dcd180f15906 100644
--- a/testing/web-platform/meta/web-locks/mode-exclusive.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/mode-exclusive.tentative.https.any.js.ini
@@ -13,19 +13,3 @@
   [Lock requests are granted in order]
     expected: FAIL
 
-
-[mode-exclusive.tentative.https.any.serviceworker.html]
-  [Requests for distinct resources can be granted]
-    expected: FAIL
-
-  [Lock requests are granted in order]
-    expected: FAIL
-
-
-[mode-exclusive.tentative.https.any.sharedworker.html]
-  [Requests for distinct resources can be granted]
-    expected: FAIL
-
-  [Lock requests are granted in order]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/mode-mixed.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/mode-mixed.tentative.https.any.js.ini
index 8161fb5151d2..d14a564a67c4 100644
--- a/testing/web-platform/meta/web-locks/mode-mixed.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/mode-mixed.tentative.https.any.js.ini
@@ -7,13 +7,3 @@
   [Lock requests are granted in order]
     expected: FAIL
 
-
-[mode-mixed.tentative.https.any.serviceworker.html]
-  [Lock requests are granted in order]
-    expected: FAIL
-
-
-[mode-mixed.tentative.https.any.sharedworker.html]
-  [Lock requests are granted in order]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/mode-shared.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/mode-shared.tentative.https.any.js.ini
index f4bba49a3970..db96d13cc725 100644
--- a/testing/web-platform/meta/web-locks/mode-shared.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/mode-shared.tentative.https.any.js.ini
@@ -13,19 +13,3 @@
   [Lock requests are granted in order]
     expected: FAIL
 
-
-[mode-shared.tentative.https.any.serviceworker.html]
-  [Shared locks are not exclusive]
-    expected: FAIL
-
-  [Lock requests are granted in order]
-    expected: FAIL
-
-
-[mode-shared.tentative.https.any.sharedworker.html]
-  [Shared locks are not exclusive]
-    expected: FAIL
-
-  [Lock requests are granted in order]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/query-empty.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/query-empty.tentative.https.any.js.ini
index 6987b6da3c23..81b4595bbbb9 100644
--- a/testing/web-platform/meta/web-locks/query-empty.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/query-empty.tentative.https.any.js.ini
@@ -7,13 +7,3 @@
   [query() returns dictionary with empty arrays when no locks are held]
     expected: FAIL
 
-
-[query-empty.tentative.https.any.sharedworker.html]
-  [query() returns dictionary with empty arrays when no locks are held]
-    expected: FAIL
-
-
-[query-empty.tentative.https.any.serviceworker.html]
-  [query() returns dictionary with empty arrays when no locks are held]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/query-order.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/query-order.tentative.https.any.js.ini
index 968ac347c8f5..70cb55e307b7 100644
--- a/testing/web-platform/meta/web-locks/query-order.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/query-order.tentative.https.any.js.ini
@@ -19,25 +19,3 @@
   [Requests appear in state in order made]
     expected: FAIL
 
-
-[query-order.tentative.https.any.serviceworker.html]
-  [Held locks appear in state in order granted, including when stolen]
-    expected: FAIL
-
-  [Held locks appear in state in order granted]
-    expected: FAIL
-
-  [Requests appear in state in order made]
-    expected: FAIL
-
-
-[query-order.tentative.https.any.sharedworker.html]
-  [Held locks appear in state in order granted, including when stolen]
-    expected: FAIL
-
-  [Held locks appear in state in order granted]
-    expected: FAIL
-
-  [Requests appear in state in order made]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/resource-names.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/resource-names.tentative.https.any.js.ini
index 817a9bff5936..c48611575447 100644
--- a/testing/web-platform/meta/web-locks/resource-names.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/resource-names.tentative.https.any.js.ini
@@ -49,55 +49,3 @@
   [DOMString: 0xDC00 0xD800]
     expected: FAIL
 
-
-[resource-names.tentative.https.any.serviceworker.html]
-  [Resource names that are not valid UTF-16 are not mangled]
-    expected: FAIL
-
-  [DOMString: 0xDC00]
-    expected: FAIL
-
-  [DOMString: 0xFFFF]
-    expected: FAIL
-
-  [Names cannot start with "-"]
-    expected: FAIL
-
-  [DOMString: ]
-    expected: FAIL
-
-  [DOMString: 0xD800]
-    expected: FAIL
-
-  [DOMString: 0x61 0x62 0x63 0x0 0x64 0x65 0x66]
-    expected: FAIL
-
-  [DOMString: 0xDC00 0xD800]
-    expected: FAIL
-
-
-[resource-names.tentative.https.any.sharedworker.html]
-  [Resource names that are not valid UTF-16 are not mangled]
-    expected: FAIL
-
-  [DOMString: 0xDC00]
-    expected: FAIL
-
-  [DOMString: 0xFFFF]
-    expected: FAIL
-
-  [Names cannot start with "-"]
-    expected: FAIL
-
-  [DOMString: ]
-    expected: FAIL
-
-  [DOMString: 0xD800]
-    expected: FAIL
-
-  [DOMString: 0x61 0x62 0x63 0x0 0x64 0x65 0x66]
-    expected: FAIL
-
-  [DOMString: 0xDC00 0xD800]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/secure-context.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/secure-context.tentative.https.any.js.ini
index 44a6697ef62c..a382bde7b41a 100644
--- a/testing/web-platform/meta/web-locks/secure-context.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/secure-context.tentative.https.any.js.ini
@@ -7,13 +7,3 @@
   [API presence in secure contexts]
     expected: FAIL
 
-
-[secure-context.tentative.https.any.serviceworker.html]
-  [API presence in secure contexts]
-    expected: FAIL
-
-
-[secure-context.tentative.https.any.sharedworker.html]
-  [API presence in secure contexts]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/signal.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/signal.tentative.https.any.js.ini
index 8c9d4ec52db0..2ca8aec07a26 100644
--- a/testing/web-platform/meta/web-locks/signal.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/signal.tentative.https.any.js.ini
@@ -49,55 +49,3 @@
   [An aborted request results in AbortError]
     expected: FAIL
 
-
-[signal.tentative.https.any.serviceworker.html]
-  [The signal option must be an AbortSignal]
-    expected: FAIL
-
-  [Abort after a timeout]
-    expected: FAIL
-
-  [Passing an already aborted signal aborts]
-    expected: FAIL
-
-  [Synchronously signaled abort]
-    expected: FAIL
-
-  [Abort signaled after lock released]
-    expected: FAIL
-
-  [Signal that is not aborted]
-    expected: FAIL
-
-  [Abort signaled after lock granted]
-    expected: FAIL
-
-  [An aborted request results in AbortError]
-    expected: FAIL
-
-
-[signal.tentative.https.any.sharedworker.html]
-  [The signal option must be an AbortSignal]
-    expected: FAIL
-
-  [Abort after a timeout]
-    expected: FAIL
-
-  [Passing an already aborted signal aborts]
-    expected: FAIL
-
-  [Synchronously signaled abort]
-    expected: FAIL
-
-  [Abort signaled after lock released]
-    expected: FAIL
-
-  [Signal that is not aborted]
-    expected: FAIL
-
-  [Abort signaled after lock granted]
-    expected: FAIL
-
-  [An aborted request results in AbortError]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/web-locks/steal.tentative.https.any.js.ini b/testing/web-platform/meta/web-locks/steal.tentative.https.any.js.ini
index 27ccd0363212..36774a71ec0f 100644
--- a/testing/web-platform/meta/web-locks/steal.tentative.https.any.js.ini
+++ b/testing/web-platform/meta/web-locks/steal.tentative.https.any.js.ini
@@ -31,37 +31,3 @@
   [Last caller wins]
     expected: FAIL
 
-
-[steal.tentative.https.any.serviceworker.html]
-  [Broken lock's release promise rejects]
-    expected: FAIL
-
-  [Lock not available]
-    expected: FAIL
-
-  [Requested lock's release promise is deferred]
-    expected: FAIL
-
-  [Lock available]
-    expected: FAIL
-
-  [Last caller wins]
-    expected: FAIL
-
-
-[steal.tentative.https.any.sharedworker.html]
-  [Broken lock's release promise rejects]
-    expected: FAIL
-
-  [Lock not available]
-    expected: FAIL
-
-  [Requested lock's release promise is deferred]
-    expected: FAIL
-
-  [Lock available]
-    expected: FAIL
-
-  [Last caller wins]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html.ini b/testing/web-platform/meta/webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html.ini
deleted file mode 100644
index 6c40044b08bf..000000000000
--- a/testing/web-platform/meta/webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[audioworkletnode-output-channel-count.https.html]
-  expected: TIMEOUT
diff --git a/testing/web-platform/tests/.taskcluster.yml b/testing/web-platform/tests/.taskcluster.yml
index 755fc2eca36d..b6d21a17ab50 100644
--- a/testing/web-platform/tests/.taskcluster.yml
+++ b/testing/web-platform/tests/.taskcluster.yml
@@ -2,155 +2,81 @@ version: 1
 policy:
   pullRequests: collaborators
 tasks:
-  $flattenDeep:
-    - $if: tasks_for == "github-push"
-      then:
+  $if: tasks_for == "github-push"
+  then:
+    $flattenDeep:
+      $map:
+        $flatten:
+          $match: {
+            event.ref == "refs/heads/master": [{name: firefox, channel: nightly}, {name: chrome, channel: dev}],
+            event.ref == "refs/heads/epochs/daily": [{name: firefox, channel: beta}, {name: chrome, channel: beta}],
+            event.ref == "refs/heads/epochs/weekly": [{name: firefox, channel: stable}, {name: chrome, channel: stable}]
+            }
+      each(browser):
         $map:
-          $flatten:
-            $match: {
-              event.ref == "refs/heads/master": [{name: firefox, channel: nightly}, {name: chrome, channel: dev}],
-              event.ref == "refs/heads/epochs/daily": [{name: firefox, channel: beta}, {name: chrome, channel: beta}],
-              event.ref == "refs/heads/epochs/weekly": [{name: firefox, channel: stable}, {name: chrome, channel: stable}]
-              }
-        each(browser):
-          $map:
-            - [testharness, 1, 15]
-            - [testharness, 2, 15]
-            - [testharness, 3, 15]
-            - [testharness, 4, 15]
-            - [testharness, 5, 15]
-            - [testharness, 6, 15]
-            - [testharness, 7, 15]
-            - [testharness, 8, 15]
-            - [testharness, 9, 15]
-            - [testharness, 10, 15]
-            - [testharness, 11, 15]
-            - [testharness, 12, 15]
-            - [testharness, 13, 15]
-            - [testharness, 14, 15]
-            - [testharness, 15, 15]
-            - [reftest, 1, 10]
-            - [reftest, 2, 10]
-            - [reftest, 3, 10]
-            - [reftest, 4, 10]
-            - [reftest, 5, 10]
-            - [reftest, 6, 10]
-            - [reftest, 7, 10]
-            - [reftest, 8, 10]
-            - [reftest, 9, 10]
-            - [reftest, 10, 10]
-            - [wdspec, 1, 1]
-          each(chunk):
-            taskId: {$eval: 'as_slugid(browser.name + browser.channel + chunk[0] + str(chunk[1]))'}
-            taskGroupId: {$eval: 'as_slugid("task group")'}
-            created: {$fromNow: ''}
-            deadline: {$fromNow: '24 hours'}
-            provisionerId: aws-provisioner-v1
-            workerType:
-              $if: event.repository.full_name == 'web-platform-tests/wpt'
-              then:
-                wpt-docker-worker
-              else:
-                github-worker
-            metadata:
-              name: wpt-${browser.name}-${browser.channel}-${chunk[0]}-${chunk[1]}
-              description: >-
-                A subset of WPT's "${chunk[0]}" tests (chunk number ${chunk[1]}
-                of ${chunk[2]}), run in the ${browser.channel} release of
-                ${browser.name}.
-              owner: ${event.pusher.email}
-              source: ${event.repository.url}
-            payload:
-              image: jugglinmike/web-platform-tests:0.21
-              maxRunTime: 7200
-              artifacts:
-                public/results:
-                  path: /home/test/artifacts
-                  type: directory
-              command:
-                - /bin/bash
-                - --login
-                - -c
-                - set -ex;
-                  ~/start.sh
-                    ${event.repository.url}
-                    ${event.ref}
-                    ${event.after}
-                    ${browser.name}
-                    ${browser.channel};
-                  cd ~/web-platform-tests;
-                  ./tools/ci/taskcluster-run.py
-                    ${browser.name}
-                    --
-                    --channel=${browser.channel}
-                    --log-wptreport=../artifacts/wpt_report.json
-                    --no-fail-on-unexpected
-                    --test-type=${chunk[0]}
-                    --this-chunk=${chunk[1]}
-                    --total-chunks=${chunk[2]};
-    - $if: tasks_for == "github-pull-request"
-      then:
-        $map: [{name: firefox, channel: nightly}, {name: chrome, channel: dev}]
-        each(browser):
-          $map:
-            - name: wpt-${browser.name}-${browser.channel}-stability
-              description: >-
-                Verify that all tests affected by a pull request are stable
-                when executed in ${browser.name}.
-              extra_args: '--verify'
-            - name: wpt-${browser.name}-${browser.channel}-results
-              description: >-
-                Collect results for all tests affected by a pull request in
-                ${browser.name}.
-              extra_args: '--no-fail-on-unexpected --log-wptreport=../artifacts/wpt_report.json'
-          each(operation):
-            taskId: {$eval: 'as_slugid(operation.name)'}
-            taskGroupId: {$eval: 'as_slugid("task group")'}
-            created: {$fromNow: ''}
-            deadline: {$fromNow: '24 hours'}
-            provisionerId: aws-provisioner-v1
-            workerType:
-              $if: event.repository.full_name == 'web-platform-tests/wpt'
-              then:
-                wpt-docker-worker
-              else:
-                github-worker
-            metadata:
-              name: ${operation.name}
-              description: ${operation.description}
-              owner: ${event.pull_request.user.login}@users.noreply.github.com
-              source: ${event.repository.url}
-            payload:
-              image: jugglinmike/web-platform-tests:0.21
-              maxRunTime: 7200
-              artifacts:
-                public/results:
-                  path: /home/test/artifacts
-                  type: directory
-              # Fetch the GitHub-provided merge commit (rather than the pull
-              # request branch) so that the tasks simulate the behavior of the
-              # submitted patch after it is merged. Using the merge commit also
-              # simplifies detection of modified files because the first parent
-              # of the merge commit can consistently be used to summarize the
-              # changes.
-              command:
-                - /bin/bash
-                - --login
-                - -c
-                - set -ex;
-                  ~/start.sh
-                    ${event.repository.clone_url}
-                    refs/pull/${event.number}/merge
-                    FETCH_HEAD
-                    ${browser.name}
-                    ${browser.channel};
-                  cd ~/web-platform-tests;
-                  result=0;
-                  ./tools/ci/taskcluster-run.py
-                    --commit-range HEAD^
-                    ${browser.name}
-                    --
-                    --channel=${browser.channel}
-                    ${operation.extra_args} || result=$?;
-                  echo $result > ../artifacts/run-return-code.txt;
-                  echo "Command exited with code $result (failures are allowed while this task is being vetted)."
+          - [testharness, 1, 15]
+          - [testharness, 2, 15]
+          - [testharness, 3, 15]
+          - [testharness, 4, 15]
+          - [testharness, 5, 15]
+          - [testharness, 6, 15]
+          - [testharness, 7, 15]
+          - [testharness, 8, 15]
+          - [testharness, 9, 15]
+          - [testharness, 10, 15]
+          - [testharness, 11, 15]
+          - [testharness, 12, 15]
+          - [testharness, 13, 15]
+          - [testharness, 14, 15]
+          - [testharness, 15, 15]
+          - [reftest, 1, 10]
+          - [reftest, 2, 10]
+          - [reftest, 3, 10]
+          - [reftest, 4, 10]
+          - [reftest, 5, 10]
+          - [reftest, 6, 10]
+          - [reftest, 7, 10]
+          - [reftest, 8, 10]
+          - [reftest, 9, 10]
+          - [reftest, 10, 10]
+          - [wdspec, 1, 1]
+        each(chunk):
+          taskId: {$eval: 'as_slugid(browser.name + browser.channel + chunk[0] + str(chunk[1]))'}
+          taskGroupId: {$eval: 'as_slugid("task group")'}
+          created: {$fromNow: ''}
+          deadline: {$fromNow: '24 hours'}
+          provisionerId: aws-provisioner-v1
+          workerType:
+            $if: event.repository.full_name == 'web-platform-tests/wpt'
+            then:
+              wpt-docker-worker
+            else:
+              github-worker
+          metadata:
+            name: wpt-${browser.name}-${browser.channel}-${chunk[0]}-${chunk[1]}
+            description: >-
+              A subset of WPT's "${chunk[0]}" tests (chunk number ${chunk[1]}
+              of ${chunk[2]}), run in the ${browser.channel} release of
+              ${browser.name}.
+            owner: ${event.pusher.email}
+            source: ${event.repository.url}
+          payload:
+            image: harjgam/web-platform-tests:0.14
+            maxRunTime: 7200
+            artifacts:
+              public/results:
+                path: /home/test/artifacts
+                type: directory
+            command:
+              - /bin/bash
+              - --login
+              - -c
+              - "~/start.sh ${event.repository.url} ${event.ref[len('refs/heads/'):]} ${event.after} ${browser.name} ${browser.channel} &&
+              cd ~/web-platform-tests &&
+              ./tools/ci/ci_taskcluster.sh ${browser.name} ${browser.channel} ${chunk[0]} ${chunk[1]} ${chunk[2]}"
+  # > NOTE: A well-designed template should produce `tasks: []` for any
+  # > unrecognized `task_for` values; this allows later expansion of this
+  # > service to handle more events.
+  #
+  # https://docs.taskcluster.net/docs/reference/integrations/taskcluster-github/docs/taskcluster-yml-v1
+  else: []
diff --git a/testing/web-platform/tests/background-fetch/fetch.https.window.js b/testing/web-platform/tests/background-fetch/fetch.https.window.js
index b730c8909de9..f2cffd0b8cfc 100644
--- a/testing/web-platform/tests/background-fetch/fetch.https.window.js
+++ b/testing/web-platform/tests/background-fetch/fetch.https.window.js
@@ -73,8 +73,8 @@ backgroundFetchTest(async (test, backgroundFetch) => {
   assert_equals(registration.uploadTotal, 0);
   assert_equals(registration.uploaded, 0);
   assert_equals(registration.downloadTotal, 0);
-  assert_equals(registration.result, '');
-  assert_equals(registration.failureReason, '');
+  assert_equals(registration.state, "pending");
+  assert_equals(registration.failureReason, "");
   // Skip `downloaded`, as the transfer may have started already.
 
   const {type, eventRegistration, results} = await getMessageFromServiceWorker();
@@ -82,8 +82,8 @@ backgroundFetchTest(async (test, backgroundFetch) => {
   assert_equals(results.length, 1);
 
   assert_equals(eventRegistration.id, registration.id);
-  assert_equals(eventRegistration.result, 'success');
-  assert_equals(eventRegistration.failureReason, '');
+  assert_equals(eventRegistration.state, "success");
+  assert_equals(eventRegistration.failureReason, "");
 
   assert_true(results[0].url.includes('resources/feature-name.txt'));
   assert_equals(results[0].status, 200);
@@ -97,7 +97,7 @@ backgroundFetchTest(async (test, backgroundFetch) => {
   // Very large download total that will definitely exceed the quota.
   const options = {downloadTotal: Number.MAX_SAFE_INTEGER};
   await promise_rejects(
-      test, 'QUOTA_EXCEEDED_ERR',
+      test, "QUOTA_EXCEEDED_ERR",
       backgroundFetch.fetch(registrationId, 'resources/feature-name.txt', options),
       'This fetch should have thrown a quota exceeded error');
 
@@ -112,8 +112,8 @@ backgroundFetchTest(async (test, backgroundFetch) => {
   assert_equals(results.length, 2);
 
   assert_equals(eventRegistration.id, registration.id);
-  assert_equals(eventRegistration.result, 'success');
-  assert_equals(eventRegistration.failureReason, '');
+  assert_equals(eventRegistration.state, "success");
+  assert_equals(eventRegistration.failureReason, "");
 
   for (const result of results) {
     assert_true(result.url.includes('resources/feature-name.txt'));
@@ -122,26 +122,3 @@ backgroundFetchTest(async (test, backgroundFetch) => {
   }
 
 }, 'Fetches can have requests with duplicate URLs');
-
-backgroundFetchTest(async (test, backgroundFetch) => {
-  const request =
-      new Request('resources/feature-name.txt',
-                  {method: 'POST', body: 'TestBody'});
-
-  const registration = await backgroundFetch.fetch('my-id', request);
-
-  const {type, eventRegistration, results} = await getMessageFromServiceWorker();
-  assert_equals('backgroundfetchsuccess', type);
-  assert_equals(results.length, 1);
-
-  assert_equals(eventRegistration.id, registration.id);
-  assert_equals(eventRegistration.state, 'success');
-  assert_equals(eventRegistration.failureReason, '');
-
-  for (const result of results) {
-    assert_true(result.url.includes('resources/feature-name.txt'));
-    assert_equals(result.status, 200);
-    assert_equals(result.text, 'Background Fetch');
-  }
-
-}, 'Fetches can have requests with a body');
diff --git a/testing/web-platform/tests/background-fetch/get.https.window.js b/testing/web-platform/tests/background-fetch/get.https.window.js
index e4dd16cacd2e..5f249663fda2 100644
--- a/testing/web-platform/tests/background-fetch/get.https.window.js
+++ b/testing/web-platform/tests/background-fetch/get.https.window.js
@@ -41,8 +41,8 @@ backgroundFetchTest(async (test, backgroundFetch) => {
   assert_equals(registration.uploadTotal, 0);
   assert_equals(registration.uploaded, 0);
   assert_equals(registration.downloadTotal, 1234);
-  assert_equals(registration.result, '');
-  assert_equals(registration.failureReason, '');
+  assert_equals(registration.state, "pending");
+  assert_equals(registration.failureReason, "");
   // Skip `downloaded`, as the transfer may have started already.
 
   const secondRegistration = await backgroundFetch.get(registrationId);
diff --git a/testing/web-platform/tests/cookie-store/cookieStore_get_set_across_frames.tentative.https.html b/testing/web-platform/tests/cookie-store/cookieStore_get_set_across_frames.tentative.https.html
deleted file mode 100644
index fe5c1f146058..000000000000
--- a/testing/web-platform/tests/cookie-store/cookieStore_get_set_across_frames.tentative.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!doctype html>
-<meta charset='utf-8'>
-<title>Async Cookies: cookieStore basic API across frames</title>
-<link rel='help' href='https://github.com/WICG/cookie-store'>
-<link rel='author' href='jarrydg@chromium.org' title='Jarryd Goodman'>
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<style>iframe { display: none; }</style>
-<iframe id='iframe'></iframe>
-<script>
-'use strict';
-
-promise_test(async t => {
-  const iframe = document.getElementById('iframe');
-  const frameCookieStore = iframe.contentWindow.cookieStore;
-
-  const oldCookie = await frameCookieStore.get('cookie-name');
-  assert_equals(oldCookie, null);
-
-  await cookieStore.set('cookie-name', 'cookie-value');
-  t.add_cleanup(() => cookieStore.delete('cookie-name'));
-
-  const frameCookie = await frameCookieStore.get('cookie-name');
-  assert_equals(frameCookie.value, 'cookie-value');
-}, 'cookieStore.get() sees cookieStore.set() in frame');
-
-promise_test(async t => {
-  const iframe = document.getElementById('iframe');
-  const frameCookieStore = iframe.contentWindow.cookieStore;
-
-  const oldCookie = await frameCookieStore.get('cookie-name');
-  assert_equals(oldCookie, null);
-
-  await frameCookieStore.set('cookie-name', 'cookie-value');
-  t.add_cleanup(() => frameCookieStore.delete('cookie-name'));
-
-  const cookie = await cookieStore.get('cookie-name');
-  assert_equals(cookie.value, 'cookie-value');
-}, 'cookieStore.get() in frame sees cookieStore.set()')
-</script>
diff --git a/testing/web-platform/tests/cookie-store/cookieStore_get_set_across_origins.tentative.sub.https.html b/testing/web-platform/tests/cookie-store/cookieStore_get_set_across_origins.tentative.sub.https.html
deleted file mode 100644
index 5cbe542e32b3..000000000000
--- a/testing/web-platform/tests/cookie-store/cookieStore_get_set_across_origins.tentative.sub.https.html
+++ /dev/null
@@ -1,63 +0,0 @@
-<!doctype html>
-<meta charset='utf-8'>
-<title>Async Cookies: cookieStore basic API across origins</title>
-<link rel='help' href='https://github.com/WICG/cookie-store'>
-<link rel='author' href='jarrydg@chromium.org' title='Jarryd Goodman'>
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/helpers.js'></script>
-<style>iframe { display: none; }</style>
-
-<script>
-'use strict';
-
-const kPath = '/cookie-store/resources/helper_iframe.sub.html';
-const kCorsBase = `https://{{domains[www1]}}:{{ports[https][0]}}`;
-const kCorsUrl = `${kCorsBase}${kPath}`;
-
-promise_test(async t => {
-  const iframe = await createIframe(kCorsUrl, t);
-  assert_true(iframe != null);
-
-  iframe.contentWindow.postMessage({
-    opname: 'set-cookie',
-    name: 'cookie-name',
-    value: 'cookie-value',
-  }, kCorsBase);
-  t.add_cleanup(() => {
-    cookieStore.delete('cookie-name');
-  });
-
-  await waitForMessage();
-
-  const cookies = await cookieStore.getAll();
-  assert_equals(cookies.length, 1);
-  assert_equals(cookies[0].name, 'cookie-name');
-  assert_equals(cookies[0].value, 'cookie-value');
-}, 'cookieStore.get() sees cookieStore.set() in cross-origin frame');
-
-promise_test(async t => {
-  const iframe = await createIframe(kCorsUrl, t);
-  assert_true(iframe != null);
-
-  await cookieStore.set('cookie-name', 'cookie-value');
-
-  const cookie = await cookieStore.get('cookie-name');
-  assert_equals(cookie.value, 'cookie-value');
-
-  iframe.contentWindow.postMessage({
-    opname: 'get-cookie',
-    name: 'cookie-name',
-  }, kCorsBase);
-  t.add_cleanup(() => {
-    cookieStore.delete('cookie-name');
-  })
-
-  const message = await waitForMessage();
-
-  const { frameCookie } = message;
-  assert_not_equals(frameCookie, null);
-  assert_equals(frameCookie.name, 'cookie-name');
-  assert_equals(frameCookie.value, 'cookie-value');
-}, 'cookieStore.get() in cross-origin frame sees cookieStore.set()');
-</script>
diff --git a/testing/web-platform/tests/cookie-store/resources/helper_iframe.sub.html b/testing/web-platform/tests/cookie-store/resources/helper_iframe.sub.html
deleted file mode 100644
index 8e91cb7bed48..000000000000
--- a/testing/web-platform/tests/cookie-store/resources/helper_iframe.sub.html
+++ /dev/null
@@ -1,31 +0,0 @@
-<!doctype html>
-<meta charset='utf-8'>
-<link rel='author' href='jarrydg@chromium.org' title='Jarryd Goodman'>
-<script>
-  'use strict';
-
-  // Writing a cookie:
-  //   Input: { cookieToSet: { name: 'cookie-name', value: 'cookie-value' } }
-  //   Response: "Cookie has been set"
-  //
-  // Read a cookie.
-  //   Command: { existingCookieName: 'cookie-name' }
-  //   Response: Result of cookieStore.get():
-  //     { frameCookie: { name: 'cookie-name', value: 'cookie-value' } }
-  window.addEventListener('message', async function (event) {
-    const { opname } = event.data;
-    if (opname === 'set-cookie') {
-      const { name, value } = event.data
-      await cookieStore.set({
-        name,
-        value,
-        domain: '{{host}}',
-      });
-      event.source.postMessage('Cookie has been set', event.origin);
-    } else if (opname === 'get-cookie') {
-      const { name } = event.data
-      const frameCookie = await cookieStore.get(name);
-      event.source.postMessage({frameCookie}, event.origin);
-    }
-  });
-</script>
diff --git a/testing/web-platform/tests/cookie-store/resources/helpers.js b/testing/web-platform/tests/cookie-store/resources/helpers.js
deleted file mode 100644
index 98f9ff6cb098..000000000000
--- a/testing/web-platform/tests/cookie-store/resources/helpers.js
+++ /dev/null
@@ -1,24 +0,0 @@
-/**
- * Promise based helper function who's return promise will resolve
- * once the iframe src has been loaded
- * @param {string} url the url to set the iframe src
- * @param {test} t a test object to add a cleanup function to
- * @return {Promise} when resolved, will return the iframe
- */
-self.createIframe = (url, t) => new Promise(resolve => {
-  const iframe = document.createElement('iframe');
-  iframe.addEventListener('load', () => {resolve(iframe);}, {once: true});
-  iframe.src = url;
-  document.documentElement.appendChild(iframe);
-  t.add_cleanup(() => iframe.remove());
-});
-
-/**
- * Function that will return a promise that resolves when a message event
- * is fired. Returns a promise that resolves to the message that was received
- */
-self.waitForMessage = () => new Promise(resolve => {
-  window.addEventListener('message', event => {
-    resolve(event.data);
-  }, {once: true});
-});
diff --git a/testing/web-platform/tests/css/css-contain/contain-layout-015.html b/testing/web-platform/tests/css/css-contain/contain-layout-015.html
new file mode 100644
index 000000000000..9c5f6757b0e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-contain/contain-layout-015.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CSS Containment Test: Layout containment ink overflow</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-contain-1/#containment-layout">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#ink-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name=assert content="Layout containment treats the element overflowing contents as ink overflow.">
+
+<style>
+#wrapper {
+  width: 100px;
+  height: 100px;
+  overflow: auto;
+  background: red;
+}
+
+#contain-layout {
+  contain: layout;
+  width: 50px;
+  height: 50px;
+}
+
+#overflow {
+  width: 200px;
+  height: 200px;
+  background: green;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="wrapper">
+  <div id="contain-layout">
+    <div id="overflow"></div>
+  </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-contain/contain-layout-cell-001.html b/testing/web-platform/tests/css/css-contain/contain-layout-cell-001.html
index fa1af0eee684..d0a2f2844b96 100644
--- a/testing/web-platform/tests/css/css-contain/contain-layout-cell-001.html
+++ b/testing/web-platform/tests/css/css-contain/contain-layout-cell-001.html
@@ -43,7 +43,6 @@
       background-color: red;
       color: yellow;
       font-family: monospace;
-      vertical-align: top;
     }
 
   div#abs-pos
diff --git a/testing/web-platform/tests/css/css-contain/contain-layout-cell-002.html b/testing/web-platform/tests/css/css-contain/contain-layout-cell-002.html
index 331a0e6519b0..5d4eff0c2bf5 100644
--- a/testing/web-platform/tests/css/css-contain/contain-layout-cell-002.html
+++ b/testing/web-platform/tests/css/css-contain/contain-layout-cell-002.html
@@ -38,7 +38,6 @@
       background-color: red;
       color: yellow;
       font-family: monospace;
-      vertical-align: top;
     }
 
   div#abs-pos
diff --git a/testing/web-platform/tests/css/css-contain/contain-size-025.html b/testing/web-platform/tests/css/css-contain/contain-size-025.html
index 5cce18c3bfd4..700a681e8c05 100644
--- a/testing/web-platform/tests/css/css-contain/contain-size-025.html
+++ b/testing/web-platform/tests/css/css-contain/contain-size-025.html
@@ -44,7 +44,7 @@
       padding: 50px;
     }
 
-  span.block-descendant, img
+  span.block-descendant
     {
       display: block;
     }
@@ -61,8 +61,8 @@
 
   <div>
     <div id="blue-test" class="inline-block">
-      <span class="block-descendant"><img src="support/blue50wBy25h.png" alt="Image download support must be enabled"></span>
-      <span id="last-line-box" class="block-descendant"><img src="support/blue50wBy25h.png" alt="Image download support must be enabled"></span>
+      <span class="block-descendant"><img src="support/blue50wBy23h.png" alt="Image download support must be enabled"></span>
+      <span id="last-line-box" class="block-descendant"><img src="support/blue50wBy23h.png" alt="Image download support must be enabled"></span>
     </div>
   </div>
 
diff --git a/testing/web-platform/tests/css/css-contain/reference/contain-layout-cell-001-ref.html b/testing/web-platform/tests/css/css-contain/reference/contain-layout-cell-001-ref.html
index 9ff7f45e39ca..093dd363392d 100644
--- a/testing/web-platform/tests/css/css-contain/reference/contain-layout-cell-001-ref.html
+++ b/testing/web-platform/tests/css/css-contain/reference/contain-layout-cell-001-ref.html
@@ -28,7 +28,6 @@
       background-color: green;
       color: white;
       font-family: monospace;
-      vertical-align: top;
     }
   </style>
 
diff --git a/testing/web-platform/tests/css/css-contain/support/blue50wBy23h.png b/testing/web-platform/tests/css/css-contain/support/blue50wBy23h.png
new file mode 100644
index 000000000000..d20129cc215d
Binary files /dev/null and b/testing/web-platform/tests/css/css-contain/support/blue50wBy23h.png differ
diff --git a/testing/web-platform/tests/css/css-contain/support/blue50wBy25h.png b/testing/web-platform/tests/css/css-contain/support/blue50wBy25h.png
deleted file mode 100644
index 35d23ec234b4..000000000000
Binary files a/testing/web-platform/tests/css/css-contain/support/blue50wBy25h.png and /dev/null differ
diff --git a/testing/web-platform/tests/css/css-device-adapt/META.yml b/testing/web-platform/tests/css/css-device-adapt/META.yml
deleted file mode 100644
index f04eba57ce45..000000000000
--- a/testing/web-platform/tests/css/css-device-adapt/META.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-spec: https://drafts.csswg.org/css-device-adapt/
-suggested_reviewers:
-  - ChumpChief
diff --git a/testing/web-platform/tests/css/css-device-adapt/idlharness.html b/testing/web-platform/tests/css/css-device-adapt/idlharness.html
deleted file mode 100644
index b9cca1bb7ee2..000000000000
--- a/testing/web-platform/tests/css/css-device-adapt/idlharness.html
+++ /dev/null
@@ -1,31 +0,0 @@
-<!DOCTYPE html>
-<title>css-device-adapt IDL tests</title>
-<link rel="help" href="https://drafts.csswg.org/css-device-adapt/">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="/resources/WebIDLParser.js"></script>
-<script src="/resources/idlharness.js"></script>
-
-<style>
-  p { color: black; }
-</style>
-<style>
- @viewport { width: device-width; }
-</style>
-
-<script>
-  'use strict';
-
-  idl_test(
-    ['css-device-adapt'],
-    ['cssom'],
-    idl_array => {
-      idl_array.add_objects({
-        CSSRule: ['cssRule'],
-        CSSViewportRule: ['cssViewportRule'],
-      });
-      self.cssRule = document.styleSheets[0].cssRules[0];
-      self.cssViewportRule = document.styleSheets[1].cssRules[0];
-    }
-  );
-</script>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-cols-filled-shrinkwrap-001.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-cols-filled-shrinkwrap-001.html
deleted file mode 100644
index 92c3bc2bad70..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-cols-filled-shrinkwrap-001.html
+++ /dev/null
@@ -1,45 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>CSS Grid Layout Test: Filled Percentage Column, Shrinkwrap Width (via float)</title>
-<link rel="help" href="https://www.w3.org/TR/css-grid-1/#algo-overview">
-<link rel="match" href="references/grid-percent-cols-filled-shrinkwrap-001-ref.html">
-<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-columns: auto 20% auto;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-column: 3;
-    }
-    .c {
-        grid-column: 2;
-    }
-
-    .ref {
-        grid-template-columns: 40px 20px 40px;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXX</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXX</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-cols-spanned-shrinkwrap-001.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-cols-spanned-shrinkwrap-001.html
deleted file mode 100644
index 33c1650eedbb..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-cols-spanned-shrinkwrap-001.html
+++ /dev/null
@@ -1,45 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>CSS Grid Layout Test: Spanned Percentage Column, Shrinkwrap Width (via float)</title>
-<link rel="help" href="https://www.w3.org/TR/css-grid-1/#algo-overview">
-<link rel="match" href="references/grid-percent-cols-spanned-shrinkwrap-001-ref.html">
-<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-columns: auto 20% auto;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-column: 3;
-    }
-    .c {
-        grid-column: span 3;
-    }
-
-    .ref {
-        grid-template-columns: 40px 20px 40px;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXXXX</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXXXX</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html
deleted file mode 100644
index 58ab6a31bb12..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-rows-filled-shrinkwrap-001.html
+++ /dev/null
@@ -1,46 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>CSS Grid Layout Test: Filled Percentage Row, Shrinkwrap Height</title>
-<link rel="help" href="https://www.w3.org/TR/css-grid-1/#algo-overview">
-<link rel="match" href="references/grid-percent-rows-filled-shrinkwrap-001-ref.html">
-<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-rows: auto 20% auto;
-        grid-auto-flow: column;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-row: 3;
-    }
-    .c {
-        grid-row: 2;
-    }
-
-    .ref {
-        grid-template-rows: 40px 20px 40px;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X<br>X<br>X</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html
deleted file mode 100644
index 545d0a28c15f..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/grid-percent-rows-spanned-shrinkwrap-001.html
+++ /dev/null
@@ -1,47 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>CSS Grid Layout Test: Spanned Percentage Row, Shrinkwrap Height</title>
-<link rel="help" href="https://www.w3.org/TR/css-grid-1/#algo-overview">
-<link rel="match" href="references/grid-percent-rows-spanned-shrinkwrap-001-ref.html">
-<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-rows: auto 20% auto;
-        grid-auto-flow: column;
-        justify-content: center;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-row: 3;
-    }
-    .c {
-        grid-row: span 3;
-    }
-
-    .ref {
-        grid-template-rows: 40px 20px 40px;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X<br>X<br>X<br>X<br>X</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X<br>X<br>X<br>X<br>X</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-cols-filled-shrinkwrap-001-ref.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-cols-filled-shrinkwrap-001-ref.html
deleted file mode 100644
index bf1b9b7e8d63..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-cols-filled-shrinkwrap-001-ref.html
+++ /dev/null
@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<title>Reference</title>
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-columns: 40px 20px 40px;
-        align-content: center;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-column: 3;
-    }
-    .c {
-        grid-column: 2;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXX</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXX</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-cols-spanned-shrinkwrap-001-ref.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-cols-spanned-shrinkwrap-001-ref.html
deleted file mode 100644
index c1b69af23a30..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-cols-spanned-shrinkwrap-001-ref.html
+++ /dev/null
@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<title>Reference</title>
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-columns: 40px 20px 40px;
-        align-content: center;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-column: 3;
-    }
-    .c {
-        grid-column: span 3;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXXXX</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">XXXXX</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-rows-filled-shrinkwrap-001-ref.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-rows-filled-shrinkwrap-001-ref.html
deleted file mode 100644
index ee66077064c1..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-rows-filled-shrinkwrap-001-ref.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<!DOCTYPE html>
-<title>Reference</title>
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-rows: 40px 20px 40px;
-        grid-auto-flow: column;
-        justify-content: center;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-row: 3;
-    }
-    .c {
-        grid-row: 2;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X<br>X<br>X</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-rows-spanned-shrinkwrap-001-ref.html b/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-rows-spanned-shrinkwrap-001-ref.html
deleted file mode 100644
index ef6c78f99a95..000000000000
--- a/testing/web-platform/tests/css/css-grid/layout-algorithm/references/grid-percent-rows-spanned-shrinkwrap-001-ref.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<!DOCTYPE html>
-<title>Reference</title>
-<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
-<style>
-    .grid {
-        display: grid;
-        float: left;
-        margin: 1em;
-        grid-template-rows: 40px 20px 40px;
-        grid-auto-flow: column;
-        justify-content: center;
-        border: solid silver;
-        font: 20px/1 Ahem;
-        color: transparent;
-    }
-    .grid > div {
-        background: blue;
-    }
-    .b {
-        grid-row: 3;
-    }
-    .c {
-        grid-row: span 3;
-    }
-</style>
-
-<p>Test passes if the two shapes below are identical
-
-<div class="grid">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X<br>X<br>X<br>X<br>X</div>
-</div>
-
-<div class="grid ref">
-    <div class="a">X</div>
-    <div class="b">X</div>
-    <div class="c">X<br>X<br>X<br>X<br>X</div>
-</div>
diff --git a/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-horizontal-ref.html b/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-horizontal-ref.html
deleted file mode 100644
index be9155bbcf82..000000000000
--- a/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-horizontal-ref.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-    <meta charset="utf-8">
-    <style>
-            .underline { text-decoration: underline; }
-            .overline { text-decoration: overline; }
-    </style>
-</head>
-<body lang="en">
-    <div class="overline">サンプル</div>
-    <div class="overline">サンプル</div>
-    <div class="underline">"text-underline-position: right" alone should be same as "auto right"</div>
-    <div class="underline">"text-underline-position: left" alone should be same as "auto left"</div>
-</body>
-</html>
-
-
diff --git a/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-vertical-ja-ref.html b/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-vertical-ja-ref.html
deleted file mode 100644
index 303655abdd24..000000000000
--- a/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-vertical-ja-ref.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-    <meta charset="utf-8">
-    <style>
-            body { writing-mode: vertical-rl; }
-            .underline { text-decoration: underline; }
-            .overline { text-decoration: overline; }
-    </style>
-</head>
-<body lang="en">
-    <div>In vertical writing mode with lang=ja, default overline will be same as underline (lang=en). However, when we set text-underline-position to "under left" it should be shifted.</div>
-    <div class="underline">サンプル</div>
-    <div class="underline">サンプル</div>
-</body>
-</html>
diff --git a/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-vertical-ref.html b/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-vertical-ref.html
deleted file mode 100644
index 8c0bee672035..000000000000
--- a/testing/web-platform/tests/css/css-text-decor/reference/text-decoration-underline-position-vertical-ref.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-    <meta charset="utf-8">
-    <style>
-            body { writing-mode: vertical-rl; }
-            .underline { text-decoration: underline; }
-            .overline { text-decoration: overline; }
-    </style>
-</head>
-<body lang="en">
-    <div class="underline">サンプル</div>
-    <div class="underline">サンプル</div>
-</body>
-</html>
-
diff --git a/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-horizontal.html b/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-horizontal.html
deleted file mode 100644
index e4d495e722e4..000000000000
--- a/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-horizontal.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-    <meta charset="utf-8">
-    <link rel="help" href="https://www.w3.org/TR/css-text-decor-3/#text-underline-position-property">
-    <link rel="match" href="reference/text-decoration-underline-position-horizontal-ref.html">
-    <style>
-        .underline { text-decoration: underline; }
-        .overline { text-decoration: overline; }
-    </style>
-</head>
-<body lang="en">
-    <div class="overline" style="text-underline-position: under right">サンプル</div>
-    <div class="overline" style="text-underline-position: under left">サンプル</div>
-    <div class="underline" style="text-underline-position: right">"text-underline-position: right" alone should be same as "auto right"</div>
-    <div class="underline" style="text-underline-position: left">"text-underline-position: left" alone should be same as "auto left"</div>
-</body>
-</html>
-
diff --git a/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-vertical-ja.html b/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-vertical-ja.html
deleted file mode 100644
index 6f41e939b24f..000000000000
--- a/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-vertical-ja.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-    <meta charset="utf-8">
-    <link rel="help" href="https://www.w3.org/TR/css-text-decor-3/#text-underline-position-property">
-    <link rel="match" href="reference/text-decoration-underline-position-vertical-ja-ref.html">
-    <style>
-        body { writing-mode: vertical-rl; }
-        .underline { text-decoration: underline; }
-        .overline { text-decoration: overline; }
-    </style>
-</head>
-<body lang="ja">
-    <div>In vertical writing mode with lang=ja, default overline will be same as underline (lang=en). However, when we set text-underline-position to "under left" it should be shifted.</div>
-    <div class="underline" style="text-underline-position: under left">サンプル</div>
-    <div class="overline">サンプル</div>
-</body>
-</html>
diff --git a/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-vertical.html b/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-vertical.html
deleted file mode 100644
index 9f60bc116bab..000000000000
--- a/testing/web-platform/tests/css/css-text-decor/text-decoration-underline-position-vertical.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-    <meta charset="utf-8">
-    <link rel="help" href="https://www.w3.org/TR/css-text-decor-3/#text-underline-position-property">
-    <link rel="match" href="reference/text-decoration-underline-position-vertical-ref.html">
-    <style>
-        body { writing-mode: vertical-rl; }
-        .underline { text-decoration: underline; }
-        .overline { text-decoration: overline; }
-    </style>
-</head>
-<body lang="en">
-    <div class="overline" style="text-underline-position: right">サンプル</div>
-    <div class="underline" style="text-underline-position: left">サンプル</div>
-</body>
-</html>
-
diff --git a/testing/web-platform/tests/css/selectors/scope-selector.html b/testing/web-platform/tests/css/selectors/scope-selector.html
index 0340f25919f3..bda0aed602aa 100644
--- a/testing/web-platform/tests/css/selectors/scope-selector.html
+++ b/testing/web-platform/tests/css/selectors/scope-selector.html
@@ -1,86 +1,34 @@
 <!doctype html>
 <link rel='help' href='https://drafts.csswg.org/selectors-4/#the-scope-pseudo'>
-<meta name='description' content=':scope should match when context object is a ShadowRoot or a DocumentFragment'>
+<meta name='description' content=':scope should match when context object is a shadow root'>
 <script src='/resources/testharness.js'></script>
 <script src='/resources/testharnessreport.js'></script>
 <div id='shadowHost'></div>
 <script>
 'use strict'
-const shadowRoot = shadowHost.attachShadow({mode:'open'})
-const externalDiv = document.createElement('div');
-externalDiv.setAttribute('id', 'external');
-const nestedDiv = document.createElement('div');
-nestedDiv.setAttribute('id', 'nested');
-shadowRoot.appendChild(externalDiv);
-externalDiv.appendChild(nestedDiv);
+  const shadowRoot = shadowHost.attachShadow({mode:'open'})
+  shadowRoot.innerHTML = '<div class="div" id="external_div">Shadow Element<div id="nesteddiv">nested</div></div>';
 
-const nestedShadowRoot = nestedDiv.attachShadow({mode:'open'})
-const shadowExternalDiv = document.createElement('div');
-shadowExternalDiv.setAttribute('id', 'shadow_external');
-const shadowNestedDiv = document.createElement('div');
-shadowNestedDiv.setAttribute('id', 'shadow_nested');
-nestedShadowRoot.appendChild(shadowExternalDiv);
-shadowExternalDiv.appendChild(shadowNestedDiv);
-
-test (() => {
-  assert_equals(shadowRoot.firstChild.querySelectorAll(':scope > div').length, 1, 'should get the number of direct children of externalDiv');
-  assert_equals(shadowRoot.firstChild.querySelector(':scope > div'), shadowRoot.getElementById('nested'), 'should get the first direct child of externalDiv');
-  assert_equals(shadowRoot.firstChild.querySelector(':scope > div'), shadowRoot.getElementById('nested'), 'should get nestedDiv');
+test(() => {
+  assert_equals(shadowRoot.firstChild.querySelectorAll(':scope >  div').length, 1, 'should get the number of direct children of external_div');
+  assert_equals(shadowRoot.firstChild.querySelector(':scope > div'), shadowRoot.getElementById("nesteddiv"), 'should get the first direct child of external_div');
+  assert_equals(shadowRoot.firstChild.querySelector(':scope > div').innerHTML, 'nested', 'should get the text in nesteddiv');
 }, 'scope selector works in shadowRoot.firstChild')
 
-test (() => {
-  assert_equals(shadowRoot.querySelector(':scope > div'), shadowRoot.getElementById('external'), 'should get the direct child of shadowRoot');
+test(() => {
+  assert_equals(shadowRoot.querySelector(':scope > div'), shadowRoot.getElementById('external_div'), 'should get the direct child of shadowRoot');
   assert_equals(shadowRoot.querySelectorAll(':scope > div').length, 1, 'should get the number of direct div children of shadowRoot');
 }, 'Selecting direct child of shadow root with :scope should work')
 
-test (() => {
-  assert_equals(shadowRoot.querySelector(':scope div'), shadowRoot.getElementById('external'), 'should get the first div descendant of shadowRoot');
-  assert_equals(shadowRoot.querySelectorAll(':scope div').length, 2, 'should get the number of the div descendants of shadowRoot, :scope div should not match for nestedShadow');
+test(() => {
+  assert_equals(shadowRoot.querySelector(':scope div'), shadowRoot.getElementById('external_div'), 'should get the first div descendant of shadowRoot');
+  assert_equals(shadowRoot.querySelectorAll(':scope div').length, 2, 'should get the number of the div descendants of shadowRoot');
 }, 'Selecting descendants of shadow root with :scope should work')
 
-test (() => {
-  assert_equals(nestedShadowRoot.querySelector(':scope > div'), nestedShadowRoot.getElementById('shadow_external'), 'should get the direct child of nestedShadowRoot');
-  assert_equals(nestedShadowRoot.querySelectorAll(':scope > div').length, 1, 'should get the number of direct div children of nestedShadowRoot');
-}, 'Selecting direct child of nested shadow root with :scope should work')
-
-test (() => {
-  assert_equals(nestedShadowRoot.querySelector(':scope div'), nestedShadowRoot.getElementById('shadow_external'), 'should get the first div descendant of nestedShadowRoot');
-  assert_equals(nestedShadowRoot.querySelectorAll(':scope div').length, 2, 'should get the number of the div descendants of nestedShadowRoot');
-}, 'Selecting descendants of nested shadow root with :scope should work')
-
-const documentFragment = document.createDocumentFragment();
-const external_div = document.createElement('div');
-external_div.setAttribute('id', 'external_div');
-const nested_div = document.createElement('div');
-nested_div.setAttribute('id', 'nested_div');
-documentFragment.appendChild(external_div);
-external_div.appendChild(nested_div);
-
-test(() => {
-  assert_equals(documentFragment.firstChild.querySelectorAll(':scope > div').length, 1, 'should get the number of direct children of external_div');
-  assert_equals(documentFragment.firstChild.querySelector(':scope > div'), documentFragment.getElementById('nested_div'), 'should get the first direct child of external_div');
-  assert_equals(documentFragment.firstChild.querySelector(':scope > div'), documentFragment.getElementById('nested_div'), 'should get the text in nesteddiv');
-}, 'scope selector works in documentFragment.firstChild')
-
-test(() => {
-  assert_equals(documentFragment.querySelector(':scope > div'), documentFragment.getElementById('external_div'), 'should get the direct child of DocumentFragment');
-  assert_equals(documentFragment.querySelectorAll(':scope > div').length, 1, 'should get the number of direct div children of DocumentFragment');
-}, 'Selecting direct child of document fragment with :scope should work')
-
-test(() => {
-  assert_equals(documentFragment.querySelector(':scope div'), documentFragment.getElementById('external_div'), 'should get the first div descendant of DocumentFragment');
-  assert_equals(documentFragment.querySelectorAll(':scope div').length, 2, 'should get the number of the div descendants of DocumentFragment');
-}, 'Selecting descendants of document fragment with :scope should work')
-
 test(() => {
   assert_equals(shadowRoot.firstChild.querySelector(':scope'), null, 'should return null');
-  assert_equals(shadowRoot.firstChild.querySelectorAll(':scope').length, 0, 'should return 0');
-
   assert_equals(shadowRoot.querySelector(':scope'), null, 'should return null');
   assert_equals(shadowRoot.querySelectorAll(':scope').length, 0, 'should return 0');
+}, 'querySelector() with ":scope" should return null, whether the context object is an element or a shadow root')
 
-  assert_equals(documentFragment.querySelector(':scope'), null, 'should return null');
-  assert_equals(documentFragment.querySelectorAll(':scope').length, 0, 'should return 0');
-
-}, 'querySelector() with ":scope" should return null, whether the context object is an element, a shadow root or a document fragment')
 </script>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html
index a8520ee2d1c8..c346a529284b 100644
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html
+++ b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-layout-formatting-context-margin-001.html
@@ -6,7 +6,7 @@
   <link rel="author" title="Kyle Zentner" href="mailto:zentner.kyle@gmail.com">
   <link rel="author" title="Morgan Rae Reschenberg" href="mailto:mreschenberg@berkeley.edu">
   <link rel="help" href="http://www.w3.org/TR/css-containment-1/#containment-layout">
-  <link rel="match" href="contain-layout-formatting-context-margin-001-ref.html">
+  <link rel="match" href="contain-paint-formatting-context-margin-001-ref.html">
   <style>
   #a {
       contain:layout;
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001-ref.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001-ref.html
deleted file mode 100644
index b2fdf4b88769..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001-ref.html
+++ /dev/null
@@ -1,49 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-  <meta charset="utf-8">
-  <title>CSS Reftest Reference</title>
-  <link rel="author" title="Gerald Squelart" href="mailto:gsquelart@mozilla.com">
-  <style>
-  .basic {
-    display: grid;
-    border: 1em solid green;
-  }
-  .height-ref {
-    height: 40px;
-    background: lightblue;
-  }
-  .width-ref {
-    width: 40px;
-  }
-  .floatLBasic-ref {
-    float: left;
-  }
-  .floatLWidth-ref {
-    float: left;
-    width: 40px;
-  }
-  </style>
-</head>
-<body>
-  <div class="basic"></div>
-  <br>
-
-  <div class="basic height-ref"></div>
-  <br>
-
-  <div class="basic height-ref"></div>
-  <br>
-
-  <div class="basic width-ref"></div>
-  <br>
-
-  <div class="basic width-ref"></div>
-  <br>
-
-  <div class="basic floatLBasic-ref"></div>
-  <br>
-
-  <div class="basic floatLWidth-ref"></div>
-</body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001.html
deleted file mode 100644
index a85b0a3138de..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001.html
+++ /dev/null
@@ -1,72 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-  <meta charset="utf-8">
-  <title>CSS Test: 'contain: size' on grid elements should cause them to be sized and baseline-aligned as if they had no contents.</title>
-  <link rel="author" title="Gerald Squelart" href="mailto:gsquelart@mozilla.com">
-  <link rel="help" href="https://drafts.csswg.org/css-contain/#containment-size">
-  <link rel="match" href="contain-size-grid-001-ref.html">
-  <style>
-  .contain {
-    display: grid;
-    contain:size;
-    border: 1em solid green;
-    background: red;
-  }
-  .innerContents {
-    color: transparent;
-    height: 100px;
-    width: 100px;
-  }
-  .minHeight {
-    min-height: 40px;
-    background: lightblue;
-  }
-  .height {
-    height: 40px;
-    background: lightblue;
-  }
-  .maxWidth {
-    max-width: 40px;
-  }
-  .width {
-    width: 40px;
-  }
-  .floatLBasic {
-    float: left;
-  }
-  .floatLWidth {
-    float: left;
-    width: 40px;
-  }
-  </style>
-</head>
-<body>
-  <!--CSS Test: A size-contained grid element with no specified size should render at 0 height regardless of content.-->
-  <div class="contain"><div class="innerContents">inner</div></div>
-  <br>
-
-  <!--CSS Test: A size-contained grid element with specified min-height should render at given min-height regardless of content.-->
-  <div class="contain minHeight"><div class="innerContents">inner</div></div>
-  <br>
-
-  <!--CSS Test: A size-contained grid element with specified height should render at given height regardless of content.-->
-  <div class="contain height"><div class="innerContents">inner</div></div>
-  <br>
-
-  <!--CSS Test: A size-contained grid element with specified max-width should render at given max-width and zero height regardless of content.-->
-  <div class="contain maxWidth"><div class="innerContents">inner</div></div>
-  <br>
-
-  <!--CSS Test: A size-contained grid element with specified width should render at given width and zero height regardless of content.-->
-  <div class="contain width"><div class="innerContents">inner</div></div>
-  <br>
-
-  <!--CSS Test: A size-contained floated grid element with no specified size should render at 0px by 0px regardless of content.-->
-  <div class="contain floatLBasic"><div class="innerContents">inner</div></div>
-  <br>
-
-  <!--CSS Test: A size-contained floated grid element with specified width and no specified height should render at given width and 0 height regardless of content.-->
-  <div class="contain floatLWidth"><div class="innerContents">inner</div></div>
-</body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list
index 6b2e31bcd46c..3760a5b4ec9d 100644
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list
+++ b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list
@@ -21,7 +21,6 @@
 == contain-size-inline-block-001.html contain-size-inline-block-001-ref.html
 == contain-size-flex-001.html contain-size-flex-001-ref.html
 == contain-size-inline-flex-001.html contain-size-inline-flex-001-ref.html
-== contain-size-grid-001.html contain-size-grid-001-ref.html
 == contain-size-multicol-001.html contain-size-multicol-001-ref.html
 == contain-size-fieldset-001.html contain-size-fieldset-001-ref.html
 == contain-size-fieldset-002.html contain-size-fieldset-002-ref.html
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016-ref.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016-ref.html
deleted file mode 100644
index c3a223389d04..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016-ref.html
+++ /dev/null
@@ -1,136 +0,0 @@
-<!DOCTYPE html>
-<!--
-     Any copyright is dedicated to the Public Domain.
-     http://creativecommons.org/publicdomain/zero/1.0/
--->
-<html>
-<head>
-  <title>CSS Reftest Reference</title>
-  <meta charset="utf-8">
-  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
-  <style>
-  .container {
-    display: block;
-    border: 2px solid purple;
-    margin: 3px;
-    /* This red should't be visible, because each container should shrinkwrap
-       its sole child (and the child should cover up this background). */
-    background: red;
-    /* Float the containers, to test in "rows", with 1 row per writing-mode. */
-    float: left;
-  }
-  br { clear: both; }
-
-  .container > * {
-    width: 10px;
-    height: 10px;
-    background: teal;
-    border: 1px solid yellow;
-  }
-  .container > * > * {
-    background: pink;
-    height: 4px;
-    width: 4px;
-    border: 1px solid black;
-  }
-
-  .pad_top    { padding-top:    3px; }
-  .pad_right  { padding-right:  4px; }
-  .pad_bottom { padding-bottom: 5px; }
-  .pad_left   { padding-left:   6px; }
-
-  .hl  { writing-mode: horizontal-tb;  direction: ltr; }
-  .hr  { writing-mode: horizontal-tb;  direction: rtl; }
-  .vl  { writing-mode: vertical-lr;    direction: ltr; }
-  .vr  { writing-mode: vertical-rl;    direction: ltr; }
-  .vl_rtl { writing-mode: vertical-lr; direction: rtl; }
-  .vr_rtl { writing-mode: vertical-rl; direction: rtl; }
-  </style>
-</head>
-<body>
-  <!-- Here, we test padding on each side of a flex item, across 6 different
-       writing-mode combinations (writing-mode X direction). -->
-  <div class="container hl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container hl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container hl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container hl">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container hr">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container hr">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container hr">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container hr">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vl">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vr">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vr">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vr">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vr">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vl_rtl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vl_rtl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vl_rtl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vl_rtl">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vr_rtl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vr_rtl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vr_rtl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vr_rtl">
-    <div class="pad_left"><div></div></div>
-  </div>
-</body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016.html
deleted file mode 100644
index 94c732358351..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-writing-mode-016.html
+++ /dev/null
@@ -1,144 +0,0 @@
-<!DOCTYPE html>
-<!--
-     Any copyright is dedicated to the Public Domain.
-     http://creativecommons.org/publicdomain/zero/1.0/
--->
-<html>
-<head>
-  <title>
-    CSS Test: Testing auto-sized flex containers
-    with various 'writing-mode' values
-    and various padding amounts on flex items.
-  </title>
-  <meta charset="utf-8">
-  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
-  <link rel="help" href="https://www.w3.org/TR/css-flexbox-1/#flex-direction-property">
-  <link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#propdef-writing-mode">
-  <link rel="match" href="flexbox-writing-mode-016-ref.html">
-  <style>
-  .container {
-    display: flex;
-    flex-direction: row;
-    border: 2px solid purple;
-    margin: 3px;
-    /* This red should't be visible, because each container should shrinkwrap
-       its sole child (and the child should cover up this background). */
-    background: red;
-    /* Float the containers, to test in "rows", with 1 row per writing-mode. */
-    float: left;
-  }
-  br { clear: both; }
-
-  .container > * {
-    width: 10px;
-    height: 10px;
-    background: teal;
-    border: 1px solid yellow;
-  }
-  .container > * > * {
-    background: pink;
-    height: 4px;
-    width: 4px;
-    border: 1px solid black;
-  }
-
-  .pad_top    { padding-top:    3px; }
-  .pad_right  { padding-right:  4px; }
-  .pad_bottom { padding-bottom: 5px; }
-  .pad_left   { padding-left:   6px; }
-
-  .hl  { writing-mode: horizontal-tb;  direction: ltr; }
-  .hr  { writing-mode: horizontal-tb;  direction: rtl; }
-  .vl  { writing-mode: vertical-lr;    direction: ltr; }
-  .vr  { writing-mode: vertical-rl;    direction: ltr; }
-  .vl_rtl { writing-mode: vertical-lr; direction: rtl; }
-  .vr_rtl { writing-mode: vertical-rl; direction: rtl; }
-  </style>
-</head>
-<body>
-  <!-- Here, we test padding on each side of a flex item, across 6 different
-       writing-mode combinations (writing-mode X direction). -->
-  <div class="container hl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container hl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container hl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container hl">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container hr">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container hr">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container hr">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container hr">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vl">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vr">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vr">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vr">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vr">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vl_rtl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vl_rtl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vl_rtl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vl_rtl">
-    <div class="pad_left"><div></div></div>
-  </div>
-  <br>
-
-  <div class="container vr_rtl">
-    <div class="pad_top"><div></div></div>
-  </div>
-  <div class="container vr_rtl">
-    <div class="pad_right"><div></div></div>
-  </div>
-  <div class="container vr_rtl">
-    <div class="pad_bottom"><div></div></div>
-  </div>
-  <div class="container vr_rtl">
-    <div class="pad_left"><div></div></div>
-  </div>
-</body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list
index df226fa8df78..ee725d99ed9c 100644
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list
+++ b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list
@@ -261,7 +261,6 @@
 == flexbox-writing-mode-013.html flexbox-writing-mode-013-ref.html
 == flexbox-writing-mode-014.html flexbox-writing-mode-014-ref.html
 == flexbox-writing-mode-015.html flexbox-writing-mode-015-ref.html
-== flexbox-writing-mode-016.html flexbox-writing-mode-016-ref.html
 
 # Single-line size clamping
 == flexbox-single-line-clamp-1.html flexbox-single-line-clamp-1-ref.html
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/sync-tests.sh b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/sync-tests.sh
index 75f00e6d0a68..3dc4638223f1 100755
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/sync-tests.sh
+++ b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/sync-tests.sh
@@ -25,4 +25,4 @@ rsync -avz --delete --filter=". ./sync-tests-filter" "$MOZTREE"/layout/reftests/
 sed -i -e 's/^\(\(fails\|needs-focus\|random\|skip\|asserts\|slow\|require-or\|silentfail\|pref\|test-pref\|ref-pref\|fuzzy\)[^ ]* *\?\)\+//;/^default-preferences /d;s/ \?# \?\(TC: \)\?[bB]ug.*//' $(find . -name reftest.list)
 sed -i -e 's/-moz-crisp-edges/pixelated/g;s/-moz-min-content/min-content/g;s/-moz-max-content/max-content/g' $(find . -regex ".*\.\(xht\|xhtml\|html\|css\)")
 git add -A .
-git commit -m"Sync Mozilla CSS tests as of https://hg.mozilla.org/mozilla-central/rev/$MOZREV ." -e .
+git commit -m"Sync Mozilla tests as of https://hg.mozilla.org/mozilla-central/rev/$MOZREV ." -e .
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-with-responsive-images.tentative.html b/testing/web-platform/tests/feature-policy/experimental-features/intrinsicSize-with-responsive-images.tentative.https.sub.html
similarity index 93%
rename from testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-with-responsive-images.tentative.html
rename to testing/web-platform/tests/feature-policy/experimental-features/intrinsicSize-with-responsive-images.tentative.https.sub.html
index 739765c0d441..60bc00ddc3ec 100644
--- a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-with-responsive-images.tentative.html
+++ b/testing/web-platform/tests/feature-policy/experimental-features/intrinsicSize-with-responsive-images.tentative.https.sub.html
@@ -6,8 +6,9 @@
 'use strict';
 
 const srcs = [
-  "/images/green.svg",
-  "/images/green.png",
+  "/feature-policy/experimental-features/resources/image.svg",
+  "/feature-policy/experimental-features/resources/image.jpg",
+  "/feature-policy/experimental-features/resources/image.png",
 ];
 
 for (var src of srcs) {
@@ -89,7 +90,7 @@ async_test(t => {
     assert_equals(img.naturalHeight, expected_intrinsic_height, 'naturalHeigh');
     t.done();
   }));
-  img.srcset = '/images/background.png 32w';
+  img.srcset = srcs[2] + ' 32w';
 }, 'Test image (32 x 32) with sizes = 100 and srcset descriptor = 32w');
 
 </script>
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html b/testing/web-platform/tests/feature-policy/experimental-features/intrinsicSize-without-unsized-media.tentative.https.sub.html
similarity index 56%
rename from testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html
rename to testing/web-platform/tests/feature-policy/experimental-features/intrinsicSize-without-unsized-media.tentative.https.sub.html
index 4192e567fcc1..4a3526425d7a 100644
--- a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html
+++ b/testing/web-platform/tests/feature-policy/experimental-features/intrinsicSize-without-unsized-media.tentative.https.sub.html
@@ -6,8 +6,9 @@
 'use strict';
 
 const srcs = [
-  "/images/green.svg",
-  "/images/green.png",
+  "/feature-policy/experimental-features/resources/image.svg",
+  "/feature-policy/experimental-features/resources/image.jpg",
+  "/feature-policy/experimental-features/resources/image.png",
 ];
 
 // Set new attribute, and wait til the media element is repainted.
@@ -18,6 +19,7 @@ function updateAttribute(e, attribute, value) {
   });
 }
 
+// Test intrinsicSize attribute with image element.
 for (var src of srcs) {
   promise_test(async() => {
     var img = document.createElement('IMG');
@@ -60,7 +62,39 @@ for (var src of srcs) {
     assert_equals(img.height, 800, 'height');
     assert_equals(img.naturalWidth, 400, 'naturalWidth');
     assert_equals(img.naturalHeight, 500, 'naturalHeight');
-  }, 'Test intrinsicsize for html image element, src=' + src);
+  }, 'Test image with src=' + src);
 }
+
+// Test intrinsicSize attribute with video element.
+promise_test(async() => {
+  var video = document.createElement('video');
+  document.body.appendChild(video);
+  video.src = "/feature-policy/experimental-features/resources/video.ogv";
+  await new Promise(resolve =>
+    video.addEventListener('canplaythrough', () => resolve(), {once: true}));
+  video.intrinsicSize = '400 x 500';
+  assert_equals(video.getBoundingClientRect().width, 400, 'width');
+  assert_equals(video.getBoundingClientRect().height, 500, 'height');
+  assert_equals(video.videoWidth, 400, 'naturalWidth');
+  assert_equals(video.videoHeight, 500, 'naturalHeight');
+
+  video.width = '800';
+  assert_equals(video.getBoundingClientRect().width, 800, 'width');
+  assert_equals(video.getBoundingClientRect().height, 1000, 'height');
+  assert_equals(video.videoWidth, 400, 'naturalWidth');
+  assert_equals(video.videoHeight, 500, 'naturalHeight');
+
+  video.style = 'height:800px;';
+  assert_equals(video.getBoundingClientRect().width, 800, 'width');
+  assert_equals(video.getBoundingClientRect().height, 800, 'height');
+  assert_equals(video.videoWidth, 400, 'naturalWidth');
+  assert_equals(video.videoHeight, 500, 'naturalHeight');
+
+  video.removeAttribute('width');
+  assert_equals(video.getBoundingClientRect().width, 640, 'width');
+  assert_equals(video.getBoundingClientRect().height, 800, 'height');
+  assert_equals(video.videoWidth, 400, 'naturalWidth');
+  assert_equals(video.videoHeight, 500, 'naturalHeight');
+}, 'Test video');
 </script>
 </body>
diff --git a/testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html b/testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html
deleted file mode 100644
index 9d4757f81ebe..000000000000
--- a/testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html
+++ /dev/null
@@ -1,122 +0,0 @@
-<!DOCTYPE html>
-<body>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script>
-'use strict';
-
-const srcs = [
-  "/feature-policy/experimental-features/resources/image.svg",
-  "/feature-policy/experimental-features/resources/image.jpg",
-  "/feature-policy/experimental-features/resources/image.png",
-];
-
-// Set new attribute, and wait til the media element is repainted.
-function updateAttribute(e, attribute, value) {
-  return new Promise(resolve => {
-    requestAnimationFrame(() => requestAnimationFrame(() => resolve()));
-    e.setAttribute(attribute, value);
-  });
-}
-
-// Test intrinsicSize attribute with image element.
-for (var src of srcs) {
-  promise_test(async() => {
-    var img = document.createElement('IMG');
-    document.body.appendChild(img);
-    img.src = src;
-    await new Promise(resolve =>
-      img.addEventListener('load', () => resolve(), {once: true}));
-    assert_equals(img.width, 300, 'width');
-    assert_equals(img.height, 150, 'height');
-    assert_equals(img.naturalWidth, 300, 'naturalWidth');
-    assert_equals(img.naturalHeight, 150, 'naturalHeight');
-
-    await updateAttribute(img, 'width', '800');
-    assert_equals(img.width, 800, 'width');
-    assert_equals(img.height, 400, 'height');
-    assert_equals(img.naturalWidth, 300, 'naturalWidth');
-    assert_equals(img.naturalHeight, 150, 'naturalHeight');
-
-    await updateAttribute(img, 'intrinsicSize', '400 x 500');
-    assert_equals(img.width, 800, 'width');
-    assert_equals(img.height, 1000, 'height');
-    assert_equals(img.naturalWidth, 400, 'naturalWidth');
-    assert_equals(img.naturalHeight, 500, 'naturalHeight');
-
-    await updateAttribute(img, 'style', 'height:800px;');
-    assert_equals(img.width, 800, 'width');
-    assert_equals(img.height, 800, 'height');
-    assert_equals(img.naturalWidth, 400, 'naturalWidth');
-    assert_equals(img.naturalHeight, 500, 'naturalHeight');
-
-    await updateAttribute(img, 'width', '');
-    assert_equals(img.width, 640, 'width');
-    assert_equals(img.height, 800, 'height');
-    assert_equals(img.naturalWidth, 400, 'naturalWidth');
-    assert_equals(img.naturalHeight, 500, 'naturalHeight');
-
-    await updateAttribute(img, 'intrinsicSize', '');
-    assert_equals(img.width, 1600, 'width');
-    assert_equals(img.height, 800, 'height');
-    assert_equals(img.naturalWidth, 300, 'naturalWidth');
-    assert_equals(img.naturalHeight, 150, 'naturalHeight');
-
-    await updateAttribute(img, 'style', '');
-    assert_equals(img.width, 300, 'width');
-    assert_equals(img.height, 150, 'height');
-    assert_equals(img.naturalWidth, 300, 'naturalWidth');
-    assert_equals(img.naturalHeight, 150, 'naturalHeight');
-  }, 'Test image with src=' + src);
-}
-
-// Test intrinsicSize attribute with video element.
-promise_test(async() => {
-  var video = document.createElement('video');
-  document.body.appendChild(video);
-  video.src = "/feature-policy/experimental-features/resources/video.ogv";
-  await new Promise(resolve =>
-  video.addEventListener('canplaythrough', () => resolve(), {once: true}));
-  assert_equals(video.getBoundingClientRect().width, 300, 'width');
-  assert_equals(video.getBoundingClientRect().height, 150, 'height');
-  assert_equals(video.videoWidth, 300, 'videoWidth');
-  assert_equals(video.videoHeight, 150, 'videoHeight');
-
-  await updateAttribute(video, 'width', '800');
-  assert_equals(video.getBoundingClientRect().width, 800, 'width');
-  assert_equals(video.getBoundingClientRect().height, 400, 'height');
-  assert_equals(video.videoWidth, 300, 'videoWidth');
-  assert_equals(video.videoHeight, 150, 'videoHeight');
-
-  await updateAttribute(video, 'intrinsicSize', '400 x 500');
-  assert_equals(video.getBoundingClientRect().width, 800, 'width');
-  assert_equals(video.getBoundingClientRect().height, 1000, 'width');
-  assert_equals(video.videoWidth, 400, 'videoWidth');
-  assert_equals(video.videoHeight, 500, 'videoHeight');
-
-  await updateAttribute(video, 'style', 'height:800px;');
-  assert_equals(video.getBoundingClientRect().width, 800, 'width');
-  assert_equals(video.getBoundingClientRect().height, 800, 'height');
-  assert_equals(video.videoWidth, 400, 'videoWidth');
-  assert_equals(video.videoHeight, 500, 'videoHeight');
-
-  await updateAttribute(video, 'width', '');
-  assert_equals(video.getBoundingClientRect().width, 640, 'width');
-  assert_equals(video.getBoundingClientRect().height, 800, 'height');
-  assert_equals(video.videoWidth, 400, 'videoWidth');
-  assert_equals(video.videoHeight, 500, 'videoHeight');
-
-  await updateAttribute(video, 'intrinsicSize', '');
-  assert_equals(video.getBoundingClientRect().width, 1600, 'width');
-  assert_equals(video.getBoundingClientRect().height, 800, 'height');
-  assert_equals(video.videoWidth, 300, 'videoWidth');
-  assert_equals(video.videoHeight, 150, 'videoHeight');
-
-  await updateAttribute(video, 'style', '');
-  assert_equals(video.getBoundingClientRect().width, 300, 'width');
-  assert_equals(video.getBoundingClientRect().height, 150, 'height');
-  assert_equals(video.videoWidth, 300, 'videoWidth');
-  assert_equals(video.videoHeight, 150, 'videoHeight');
-}, 'Test video');
-</script>
-</body>
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers b/testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers
similarity index 100%
rename from testing/web-platform/tests/html/semantics/embedded-content/the-img-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers
rename to testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers
diff --git a/testing/web-platform/tests/feature-policy/experimental-features/unsized-media.tentative.https.sub.html b/testing/web-platform/tests/feature-policy/experimental-features/unsized-image.tentative.https.sub.html
similarity index 94%
rename from testing/web-platform/tests/feature-policy/experimental-features/unsized-media.tentative.https.sub.html
rename to testing/web-platform/tests/feature-policy/experimental-features/unsized-image.tentative.https.sub.html
index 172e4c8e4fed..3731f0be276c 100644
--- a/testing/web-platform/tests/feature-policy/experimental-features/unsized-media.tentative.https.sub.html
+++ b/testing/web-platform/tests/feature-policy/experimental-features/unsized-image.tentative.https.sub.html
@@ -17,12 +17,12 @@ const test_cases = [
 {expected_width: default_width, expected_height: default_height},
 // Test when only one dimension is specified, img/video uses the default length for
 // the other dimension.
-{attribute: "width", value: 500, expected_width: 500, expected_height: 500 / 2},
-{attribute: "height", value: 800, expected_width: 800 * 2, expected_height: 800},
+{attribute: "width", value: 500, expected_width: 500, expected_height: default_height},
+{attribute: "height", value: 800, expected_width: default_width, expected_height: 800},
 // Test when only one dimension is specified by CSS style, img/video uses the
 // default length for the other dimension.
-{attribute: "style", value: "width:500px;", expected_width: 500, expected_height: 500 / 2},
-{attribute: "style", value: "height:800px;", expected_width: 800 * 2, expected_height: 800},
+{attribute: "style", value: "width:500px;", expected_width: 500, expected_height: default_height},
+{attribute: "style", value: "height:800px;", expected_width: default_width, expected_height: 800},
 // Test when the size of the image is specified, img/video is laid out by the
 // specified size.
 {attribute: "width", value: 500, attribute1: "height", value1: 800, expected_width: 500, expected_height:800},
diff --git a/testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html.headers b/testing/web-platform/tests/feature-policy/experimental-features/unsized-image.tentative.https.sub.html.headers
similarity index 100%
rename from testing/web-platform/tests/feature-policy/experimental-features/intrinsicsize-with-unsized-media.tentative.https.sub.html.headers
rename to testing/web-platform/tests/feature-policy/experimental-features/unsized-image.tentative.https.sub.html.headers
diff --git a/testing/web-platform/tests/feature-policy/experimental-features/unsized-media.tentative.https.sub.html.headers b/testing/web-platform/tests/feature-policy/experimental-features/unsized-media.tentative.https.sub.html.headers
deleted file mode 100644
index db2dcbc1929b..000000000000
--- a/testing/web-platform/tests/feature-policy/experimental-features/unsized-media.tentative.https.sub.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Feature-Policy: unsized-media 'none'
diff --git a/testing/web-platform/tests/feature-policy/reporting/vr-reporting.https.html b/testing/web-platform/tests/feature-policy/reporting/vr-reporting.https.html
deleted file mode 100644
index 12cae052a167..000000000000
--- a/testing/web-platform/tests/feature-policy/reporting/vr-reporting.https.html
+++ /dev/null
@@ -1,32 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <script src='/resources/testharness.js'></script>
-    <script src='/resources/testharnessreport.js'></script>
-  </head>
-  <body>
-    <script>
-var check_report_format = (reports, observer) => {
-  let report = reports[0];
-  assert_equals(report.type, "feature-policy");
-  assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "vr");
-  assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
-  assert_equals(typeof report.body.lineNumber, "number");
-  assert_equals(typeof report.body.columnNumber, "number");
-};
-
-promise_test(async (t) => {
-  const report = new Promise(resolve => {
-    new ReportingObserver((reports, observer) => resolve([reports, observer]),
-                          {types: ['feature-policy']}).observe();
-  });
-  await promise_rejects(t, 'SecurityError', navigator.getVRDisplays(),
-                        "VR device access should not be allowed in this document.");
-  const [reports, observer] = await report;
-  check_report_format(reports, observer);
-}, "VR Report Format");
-    </script>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/feature-policy/reporting/vr-reporting.https.html.headers b/testing/web-platform/tests/feature-policy/reporting/vr-reporting.https.html.headers
deleted file mode 100644
index d021af75636d..000000000000
--- a/testing/web-platform/tests/feature-policy/reporting/vr-reporting.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Feature-Policy: vr 'none'
diff --git a/testing/web-platform/tests/feature-policy/reporting/xr-reporting.https.html b/testing/web-platform/tests/feature-policy/reporting/xr-reporting.https.html
deleted file mode 100644
index a7a122237bb0..000000000000
--- a/testing/web-platform/tests/feature-policy/reporting/xr-reporting.https.html
+++ /dev/null
@@ -1,32 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <script src='/resources/testharness.js'></script>
-    <script src='/resources/testharnessreport.js'></script>
-  </head>
-  <body>
-    <script>
-var check_report_format = (reports, observer) => {
-  let report = reports[0];
-  assert_equals(report.type, "feature-policy");
-  assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "vr");
-  assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
-  assert_equals(typeof report.body.lineNumber, "number");
-  assert_equals(typeof report.body.columnNumber, "number");
-};
-
-promise_test(async (t) => {
-  const report = new Promise(resolve => {
-    new ReportingObserver((reports, observer) => resolve([reports, observer]),
-                          {types: ['feature-policy']}).observe();
-  });
-  await promise_rejects(t, 'SecurityError', navigator.xr.requestDevice(),
-                        "XR device access should not be allowed in this document.");
-  const [reports, observer] = await report;
-  check_report_format(reports, observer);
-}, "XR Report Format");
-    </script>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/feature-policy/reporting/xr-reporting.https.html.headers b/testing/web-platform/tests/feature-policy/reporting/xr-reporting.https.html.headers
deleted file mode 100644
index d021af75636d..000000000000
--- a/testing/web-platform/tests/feature-policy/reporting/xr-reporting.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Feature-Policy: vr 'none'
diff --git a/testing/web-platform/tests/fullscreen/api/element-request-fullscreen-options.html b/testing/web-platform/tests/fullscreen/api/element-request-fullscreen-options.html
deleted file mode 100644
index c6ce1fdc016e..000000000000
--- a/testing/web-platform/tests/fullscreen/api/element-request-fullscreen-options.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE html>
-<title>Element#requestFullscreen({ navigationUI }) support</title>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<body>
-<script>
-// Tests for https://github.com/whatwg/fullscreen/pull/129. Because there are
-// no normative requirements on what navigationUI should do, just test for
-// basic support. (One could also check that the three allowed enum valid are
-// supported and no others, but that would overlap with UA-specific tests.)
-test(() => {
-  let invoked = false;
-  document.body.requestFullscreen({
-    get navigationUI() { invoked = true; return "irrelevant-value"; }
-  });
-  assert_true(invoked, "navigationUI getter invoked");
-});
-</script>
diff --git a/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-calculating-min-max-content.html b/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-calculating-min-max-content.html
deleted file mode 100644
index 4a9f26189539..000000000000
--- a/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-calculating-min-max-content.html
+++ /dev/null
@@ -1,34 +0,0 @@
-<!DOCTYPE html>
-<title>fieldset calculating min-/max-content</title>
-<script src=/resources/testharness.js></script>
-<script src=/resources/testharnessreport.js></script>
-<style>
-fieldset { margin: 0; padding: 0; }
-.min-content { width: 0; }
-legend { padding: 0; }
-fieldset, #ref-max-content, #ref-min-content { float: left; clear: left; border: 1px solid; }
-#log { clear: left; }
-</style>
-<fieldset class=max-content><legend>foo fooo</legend>x x</fieldset>
-<fieldset class=max-content><legend>x x</legend>foo fooo</fieldset>
-<div id=ref-max-content>foo fooo</div>
-
-<fieldset class=min-content><legend>foo fooo</legend>x x</fieldset>
-<fieldset class=min-content><legend>x x</legend>foo fooo</fieldset>
-<div id=ref-min-content>fooo</div>
-
-<script>
-test(() => {
-  const ref = document.querySelector('#ref-max-content');
-  for (const e of document.querySelectorAll('.max-content')) {
-    assert_equals(e.clientWidth, ref.clientWidth);
-  }
-}, 'max-content');
-
-test(() => {
-  const ref = document.querySelector('#ref-min-content');
-  for (const e of document.querySelectorAll('.min-content')) {
-    assert_equals(e.clientWidth, ref.clientWidth);
-  }
-}, 'min-content');
-</script>
diff --git a/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-generated-content.html b/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-generated-content.html
deleted file mode 100644
index a4e7a490c770..000000000000
--- a/testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-generated-content.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!doctype html>
-<title>fieldset generated content</title>
-<script src=/resources/testharness.js></script>
-<script src=/resources/testharnessreport.js></script>
-<style>
-fieldset { display: inline-block; }
-#test::before, #test::after { content:"X"; }
-</style>
-<fieldset id=test><legend>A</legend>Y</fieldset>
-<fieldset id=ref><legend>A</legend>XYX</fieldset>
-<script>
-test(() => {
-  const testElm = document.querySelector('#test');
-  const refElm = document.querySelector('#ref');
-  assert_equals(testElm.clientWidth, refElm.clientWidth, 'clientWidth');
-  assert_equals(testElm.clientHeight, refElm.clientHeight, 'clientHeight');
-});
-</script>
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image-ref.html b/testing/web-platform/tests/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image-ref.html
deleted file mode 100644
index 41ddd757eca5..000000000000
--- a/testing/web-platform/tests/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image-ref.html
+++ /dev/null
@@ -1,22 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<body>
-<svg width=200 height=200>
-  <image href="/images/background.png" width="32" height="32"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" width="300" height="150"/>
-</svg>
-<svg width=400 height=400>
-  <image href="/images/background.png" width="300" height="150"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" width="300" height="150"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" height="50" width="100"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" width="100" height="100"/>
-</svg>
-</body>
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html b/testing/web-platform/tests/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html
deleted file mode 100644
index a0943169d0a5..000000000000
--- a/testing/web-platform/tests/html/semantics/embedded-content/svg/intrinsicsize/intrinsicsize-svg-image.tentative.html
+++ /dev/null
@@ -1,24 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<link rel="match" href="intrinsicsize-svg-image-ref.html">
-<meta name="assert" content="test">
-<body>
-<svg width=200 height=200>
-  <image href="/images/background.png"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" intrinsicsize="300x150"/>
-</svg>
-<svg width=400 height=400>
-  <image href="/images/background.png" intrinsicsize="300x150"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" intrinsicsize="300x150" width="300"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" intrinsicsize="300x150" height="50"/>
-</svg>
-<svg width=200 height=200>
-  <image href="/images/background.png" intrinsicsize="300x150" width="100" height="100"/>
-</svg>
-</body>
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html b/testing/web-platform/tests/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html
deleted file mode 100644
index d749d5576e68..000000000000
--- a/testing/web-platform/tests/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<!DOCTYPE html>
-<body>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script>
-'use strict';
-
-promise_test(async() => {
-  var video = document.createElement('video');
-  document.body.appendChild(video);
-  video.src = "/images/pattern.ogv";
-  await new Promise(resolve =>
-    video.addEventListener('canplaythrough', () => resolve(), {once: true}));
-  video.intrinsicSize = '400 x 500';
-  assert_equals(video.getBoundingClientRect().width, 400, 'width');
-  assert_equals(video.getBoundingClientRect().height, 500, 'height');
-  assert_equals(video.videoWidth, 400, 'naturalWidth');
-  assert_equals(video.videoHeight, 500, 'naturalHeight');
-
-  video.width = '800';
-  assert_equals(video.getBoundingClientRect().width, 800, 'width');
-  assert_equals(video.getBoundingClientRect().height, 1000, 'height');
-  assert_equals(video.videoWidth, 400, 'naturalWidth');
-  assert_equals(video.videoHeight, 500, 'naturalHeight');
-
-  video.style = 'height:800px;';
-  assert_equals(video.getBoundingClientRect().width, 800, 'width');
-  assert_equals(video.getBoundingClientRect().height, 800, 'height');
-  assert_equals(video.videoWidth, 400, 'naturalWidth');
-  assert_equals(video.videoHeight, 500, 'naturalHeight');
-
-  video.removeAttribute('width');
-  assert_equals(video.getBoundingClientRect().width, 640, 'width');
-  assert_equals(video.getBoundingClientRect().height, 800, 'height');
-  assert_equals(video.videoWidth, 400, 'naturalWidth');
-  assert_equals(video.videoHeight, 500, 'naturalHeight');
-}, 'Test intrinsicsize for html video element');
-</script>
-</body>
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers b/testing/web-platform/tests/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers
deleted file mode 100644
index 4fbf3f5adddb..000000000000
--- a/testing/web-platform/tests/html/semantics/embedded-content/the-video-element/intrinsicsize/intrinsicsize-without-unsized-media.tentative.https.sub.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Feature-Policy: unsized-media *
diff --git a/testing/web-platform/tests/interfaces/css-device-adapt.idl b/testing/web-platform/tests/interfaces/css-device-adapt.idl
deleted file mode 100644
index 8166d2e75f95..000000000000
--- a/testing/web-platform/tests/interfaces/css-device-adapt.idl
+++ /dev/null
@@ -1,13 +0,0 @@
-// GENERATED CONTENT - DO NOT EDIT
-// Content was automatically extracted by Reffy into reffy-reports
-// (https://github.com/tidoust/reffy-reports)
-// Source: CSS Device Adaptation Module Level 1 (https://drafts.csswg.org/css-device-adapt/)
-
-partial interface CSSRule {
-    const unsigned short VIEWPORT_RULE = 15;
-};
-
-[Exposed=Window]
-interface CSSViewportRule : CSSRule {
-    readonly attribute CSSStyleDeclaration style;
-};
diff --git a/testing/web-platform/tests/interfaces/css-layout-api.idl b/testing/web-platform/tests/interfaces/css-layout-api.idl
deleted file mode 100644
index 4e2659933ed4..000000000000
--- a/testing/web-platform/tests/interfaces/css-layout-api.idl
+++ /dev/null
@@ -1,160 +0,0 @@
-// GENERATED CONTENT - DO NOT EDIT
-// Content was automatically extracted by Reffy into reffy-reports
-// (https://github.com/tidoust/reffy-reports)
-// Source: CSS Layout API Level 1 (https://drafts.css-houdini.org/css-layout-api-1/)
-
-[Exposed=LayoutWorklet]
-interface LayoutChild {
-    readonly attribute StylePropertyMapReadOnly styleMap;
-
-    IntrinsicSizesRequest intrinsicSizes();
-    LayoutFragmentRequest layoutNextFragment(LayoutConstraints constraints, ChildBreakToken breakToken);
-};
-
-[Exposed=LayoutWorklet]
-interface LayoutFragment {
-    readonly attribute double inlineSize;
-    readonly attribute double blockSize;
-
-    attribute double inlineOffset;
-    attribute double blockOffset;
-
-    readonly attribute any data;
-
-    readonly attribute ChildBreakToken? breakToken;
-};
-
-[Exposed=LayoutWorklet]
-interface IntrinsicSizes {
-  readonly attribute double minContentSize;
-  readonly attribute double maxContentSize;
-};
-
-[Constructor(optional LayoutConstraintsOptions options),Exposed=LayoutWorklet]
-interface LayoutConstraints {
-    readonly attribute double availableInlineSize;
-    readonly attribute double availableBlockSize;
-
-    readonly attribute double? fixedInlineSize;
-    readonly attribute double? fixedBlockSize;
-
-    readonly attribute double percentageInlineSize;
-    readonly attribute double percentageBlockSize;
-
-    readonly attribute double? blockFragmentationOffset;
-    readonly attribute BlockFragmentationType blockFragmentationType;
-
-    readonly attribute any data;
-};
-
-dictionary LayoutConstraintsOptions {
-    double availableInlineSize = 0;
-    double availableBlockSize = 0;
-
-    double fixedInlineSize;
-    double fixedBlockSize;
-
-    double percentageInlineSize;
-    double percentageBlockSize;
-
-    double blockFragmentationOffset;
-    BlockFragmentationType blockFragmentationType = "none";
-
-    any data;
-};
-
-enum BlockFragmentationType { "none", "page", "column", "region" };
-
-[Exposed=LayoutWorklet]
-interface ChildBreakToken {
-    readonly attribute BreakType breakType;
-    readonly attribute LayoutChild child;
-};
-
-[Exposed=LayoutWorklet]
-interface BreakToken {
-    readonly attribute FrozenArray<ChildBreakToken> childBreakTokens;
-    readonly attribute any data;
-};
-
-dictionary BreakTokenOptions {
-    sequence<ChildBreakToken> childBreakTokens;
-    any data = null;
-};
-
-enum BreakType { "none", "line", "column", "page", "region" };
-
-[Exposed=LayoutWorklet]
-interface LayoutEdgeSizes {
-  readonly attribute double inlineStart;
-  readonly attribute double inlineEnd;
-
-  readonly attribute double blockStart;
-  readonly attribute double blockEnd;
-
-  // Convenience attributes for the sum in one direction.
-  readonly attribute double inline;
-  readonly attribute double block;
-};
-
-[Exposed=LayoutWorklet]
-interface LayoutEdges {
-  readonly attribute LayoutEdgeSizes border;
-  readonly attribute LayoutEdgeSizes scrollbar;
-  readonly attribute LayoutEdgeSizes padding;
-
-  readonly attribute LayoutEdgeSizes all;
-};
-
-partial namespace CSS {
-    [SameObject] readonly attribute Worklet layoutWorklet;
-};
-
-[Global=(Worklet,LayoutWorklet),Exposed=LayoutWorklet]
-interface LayoutWorkletGlobalScope : WorkletGlobalScope {
-    void registerLayout(DOMString name, VoidFunction layoutCtor);
-};
-
-[Exposed=LayoutWorklet]
-dictionary LayoutOptions {
-  ChildDisplayType childDisplay = "block";
-  LayoutSizingMode sizing = "block-like";
-};
-
-[Exposed=LayoutWorklet]
-enum ChildDisplayType {
-    "block",
-    "normal",
-};
-
-[Exposed=LayoutWorklet]
-enum LayoutSizingMode {
-    "block-like",
-    "manual",
-};
-
-[Exposed=LayoutWorklet]
-interface IntrinsicSizesRequest {
-};
-
-[Exposed=LayoutWorklet]
-interface LayoutFragmentRequest {
-};
-
-typedef (IntrinsicSizesRequest or LayoutFragmentRequest)
-    LayoutFragmentRequestOrIntrinsicSizesRequest;
-
-// This is the final return value from the author defined layout() method.
-dictionary FragmentResultOptions {
-    double inlineSize = 0;
-    double blockSize = 0;
-    double autoBlockSize = 0;
-    sequence<LayoutFragment> childFragments = [];
-    any data = null;
-    BreakTokenOptions breakToken = null;
-};
-
-dictionary IntrinsicSizesResultOptions {
-    double maxContentSize;
-    double minContentSize;
-};
diff --git a/testing/web-platform/tests/interfaces/css-typed-om.idl b/testing/web-platform/tests/interfaces/css-typed-om.idl
index 02fe7bb83ad7..3b2a9698920d 100644
--- a/testing/web-platform/tests/interfaces/css-typed-om.idl
+++ b/testing/web-platform/tests/interfaces/css-typed-om.idl
@@ -311,6 +311,13 @@ dictionary CSSMatrixComponentOptions {
     boolean is2D;
 };
 
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
+ Constructor(CSSNumericValue x, CSSNumericValue y)]
+interface CSSPositionValue : CSSStyleValue {
+    attribute CSSNumericValue x;
+    attribute CSSNumericValue y;
+};
+
 [Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSImageValue : CSSStyleValue {
 };
diff --git a/testing/web-platform/tests/interfaces/font-metrics-api.idl b/testing/web-platform/tests/interfaces/font-metrics-api.idl
deleted file mode 100644
index b13def2d74c7..000000000000
--- a/testing/web-platform/tests/interfaces/font-metrics-api.idl
+++ /dev/null
@@ -1,39 +0,0 @@
-// GENERATED CONTENT - DO NOT EDIT
-// Content was automatically extracted by Reffy into reffy-reports
-// (https://github.com/tidoust/reffy-reports)
-// Source: Font Metrics API Level 1 (https://drafts.css-houdini.org/font-metrics-api/)
-
-partial interface Document {
-    FontMetrics measureElement(Element element);
-    FontMetrics measureText(DOMString text, StylePropertyMapReadOnly styleMap);
-};
-
-interface FontMetrics {
-  readonly attribute double width;
-  readonly attribute sequence<double> advances;
-
-  readonly attribute double boundingBoxLeft;
-  readonly attribute double boundingBoxRight;
-
-  readonly attribute double height;
-  readonly attribute double emHeightAscent;
-  readonly attribute double emHeightDescent;
-  readonly attribute double boundingBoxAscent;
-  readonly attribute double boundingBoxDescent;
-  readonly attribute double fontBoundingBoxAscent;
-  readonly attribute double fontBoundingBoxDescent;
-
-  readonly attribute Baseline dominantBaseline;
-  readonly attribute sequence<Baseline> baselines;
-  readonly attribute sequence<Font> fonts;
-};
-
-interface Baseline {
-  readonly attribute DOMString name;
-  readonly attribute double value;
-};
-
-interface Font {
-  readonly attribute DOMString name;
-  readonly attribute unsigned long glyphsRendered;
-};
diff --git a/testing/web-platform/tests/interfaces/fullscreen.idl b/testing/web-platform/tests/interfaces/fullscreen.idl
index 87f1599750a6..604dd3fe10a1 100644
--- a/testing/web-platform/tests/interfaces/fullscreen.idl
+++ b/testing/web-platform/tests/interfaces/fullscreen.idl
@@ -3,18 +3,8 @@
 // (https://github.com/tidoust/reffy-reports)
 // Source: Fullscreen API Standard (https://fullscreen.spec.whatwg.org/)
 
-enum FullscreenNavigationUI {
-  "auto",
-  "show",
-  "hide"
-};
-
-dictionary FullscreenOptions {
-  FullscreenNavigationUI navigationUI = "auto";
-};
-
 partial interface Element {
-  Promise<void> requestFullscreen(optional FullscreenOptions options);
+  Promise<void> requestFullscreen();
 
   attribute EventHandler onfullscreenchange;
   attribute EventHandler onfullscreenerror;
diff --git a/testing/web-platform/tests/intersection-observer/resources/intersection-observer-test-utils.js b/testing/web-platform/tests/intersection-observer/resources/intersection-observer-test-utils.js
index 8683c8b570c8..5ad811932f06 100644
--- a/testing/web-platform/tests/intersection-observer/resources/intersection-observer-test-utils.js
+++ b/testing/web-platform/tests/intersection-observer/resources/intersection-observer-test-utils.js
@@ -6,73 +6,23 @@
 //   - Modify DOM in a way that should trigger an IntersectionObserver callback.
 // - BeginFrame
 //   - requestAnimationFrame handler runs
-//     - Second requestAnimationFrame()
+//     - First step_timeout()
 //   - Style, layout, paint
 //   - IntersectionObserver generates new notifications
 //     - Posts a task to deliver notifications
+// - First step_timeout handler runs
+//   - Second step_timeout()
 // - Task to deliver IntersectionObserver notifications runs
 //   - IntersectionObserver callbacks run
-// - Second requestAnimationFrameHandler runs
-//     - step_timeout()
-// - step_timeout handler runs
+// - Second step_timeout handler runs
 //   - myTestFunction1()
 //     - [optional] waitForNotification(myTestFunction2)
 //       - requestAnimationFrame()
 //     - Verify newly-arrived IntersectionObserver notifications
 //     - [optional] Modify DOM to trigger new notifications
-//
-// Ideally, it should be sufficient to use requestAnimationFrame followed
-// by two step_timeouts, with the first step_timeout firing in between the
-// requestAnimationFrame handler and the task to deliver notifications.
-// However, the precise timing of requestAnimationFrame, the generation of
-// a new display frame (when IntersectionObserver notifications are
-// generated), and the delivery of these events varies between engines, making
-// this tricky to test in a non-flaky way.
-//
-// In particular, in WebKit, requestAnimationFrame and the generation of
-// a display frame are two separate tasks, so a step_timeout called within
-// requestAnimationFrame can fire before a display frame is generated.
-//
-// In Gecko, on the other hand, requestAnimationFrame and the generation of
-// a display frame are a single task, and IntersectionObserver notifications
-// are generated during this task. However, the task posted to deliver these
-// notifications can fire after the following requestAnimationFrame.
-//
-// This means that in general, by the time the second requestAnimationFrame
-// handler runs, we know that IntersectionObservations have been generated,
-// and that a task to deliver these notifications has been posted (though
-// possibly not yet delivered). Then, by the time the step_timeout() handler
-// runs, these notifications have been delivered.
-//
-// Since waitForNotification uses a double-rAF, it is now possible that
-// IntersectionObservers may have generated more notifications than what is
-// under test, but have not yet scheduled the new batch of notifications for
-// delivery. As a result, observer.takeRecords should NOT be used in tests:
-//
-// - myTestFunction0()
-//   - waitForNotification(myTestFunction1)
-//     - requestAnimationFrame()
-//   - Modify DOM in a way that should trigger an IntersectionObserver callback.
-// - BeginFrame
-//   - requestAnimationFrame handler runs
-//     - Second requestAnimationFrame()
-//   - Style, layout, paint
-//   - IntersectionObserver generates a batch of notifications
-//     - Posts a task to deliver notifications
-// - Task to deliver IntersectionObserver notifications runs
-//   - IntersectionObserver callbacks run
-// - BeginFrame
-//   - Second requestAnimationFrameHandler runs
-//     - step_timeout()
-//   - IntersectionObserver generates another batch of notifications
-//     - Post task to deliver notifications
-// - step_timeout handler runs
-//   - myTestFunction1()
-//     - At this point, observer.takeRecords will get the second batch of
-//       notifications.
 function waitForNotification(t, f) {
   requestAnimationFrame(function() {
-    requestAnimationFrame(function() { t.step_timeout(f); });
+    t.step_timeout(function() { t.step_timeout(f); });
   });
 }
 
diff --git a/testing/web-platform/tests/lint.whitelist b/testing/web-platform/tests/lint.whitelist
index 837a9d01a75b..7d579b6b343a 100644
--- a/testing/web-platform/tests/lint.whitelist
+++ b/testing/web-platform/tests/lint.whitelist
@@ -650,8 +650,6 @@ CSS-COLLIDING-REF-NAME: css/css-flexbox/reference/percentage-size-subitems-001-r
 CSS-COLLIDING-REF-NAME: css/css-grid/grid-items/percentage-size-subitems-001-ref.html
 CSS-COLLIDING-REF-NAME: css/css-contain/reference/contain-size-button-001-ref.html
 CSS-COLLIDING-REF-NAME: css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-button-001-ref.html
-CSS-COLLIDING-REF-NAME: css/css-contain/reference/contain-size-grid-001-ref.html
-CSS-COLLIDING-REF-NAME: css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-size-grid-001-ref.html
 CSS-COLLIDING-SUPPORT-NAME: css/css-backgrounds/support/red.png
 CSS-COLLIDING-SUPPORT-NAME: css/compositing/mix-blend-mode/support/red.png
 CSS-COLLIDING-SUPPORT-NAME: css/compositing/background-blending/support/red.png
diff --git a/testing/web-platform/tests/mediacapture-image/getPhotoCapabilities.html b/testing/web-platform/tests/mediacapture-image/getPhotoCapabilities.html
index f416cd670783..6cf14c329878 100644
--- a/testing/web-platform/tests/mediacapture-image/getPhotoCapabilities.html
+++ b/testing/web-platform/tests/mediacapture-image/getPhotoCapabilities.html
@@ -58,19 +58,4 @@ promise_test(t => {
 
 }, 'getPhotoCapabilities() of an ended Track should throw "InvalidStateError"');
 
-async_test(t => {
-  let canvas = document.getElementById('canvas');
-  let context = canvas.getContext('2d');
-  context.fillStyle = 'red';
-  context.fillRect(0, 0, 10, 10);
-  let stream = canvas.captureStream();
-  let videoTrack = stream.getVideoTracks()[0];
-
-  let capturer = new ImageCapture(videoTrack);
-  capturer.getPhotoCapabilities()
-  .then(t.step_func_done(() => assert_unreached('should throw "OperationError"')))
-  .catch(t.step_func_done(e => assert_equals(e.name, 'OperationError')))
-  videoTrack.stop();
-}, 'throw "OperationError" when the MediaStreamTrack is stopped while getting photo capabilities');
-
 </script>
diff --git a/testing/web-platform/tests/mediacapture-image/getPhotoSettings.html b/testing/web-platform/tests/mediacapture-image/getPhotoSettings.html
index 2344bca9f337..f7252b4c89fb 100644
--- a/testing/web-platform/tests/mediacapture-image/getPhotoSettings.html
+++ b/testing/web-platform/tests/mediacapture-image/getPhotoSettings.html
@@ -43,19 +43,4 @@ promise_test(t => {
 
 }, 'getPhotoSettings() of an ended Track should throw "InvalidStateError"');
 
-async_test(t => {
-  let canvas = document.getElementById('canvas');
-  let context = canvas.getContext('2d');
-  context.fillStyle = 'red';
-  context.fillRect(0, 0, 10, 10);
-  let stream = canvas.captureStream();
-  let videoTrack = stream.getVideoTracks()[0];
-
-  let capturer = new ImageCapture(videoTrack);
-  capturer.getPhotoSettings()
-  .then(t.step_func_done(() => assert_unreached('should throw "OperationError"')))
-  .catch(t.step_func_done(e => assert_equals(e.name, 'OperationError')))
-  videoTrack.stop();
-}, 'throw "OperationError" when the MediaStreamTrack is stopped while getting photo settings');
-
 </script>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index a6c8fe82b59e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 035904520990..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 3772f3b64ae2..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 92d7db06f96e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index bd51356e2f9a..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 51b84997e39f..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index eff7b592dbb1..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 1b7257dc8612..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index b3bb1383564f..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index eb3b0a9eb511..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 9c7b75354009..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 61288bb8c772..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 4b326660bbb9..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 031a3728534a..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 253234f3b3ef..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 61ef1c2d3bc0..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index d4dd6daccf5b..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 9b28a62a9a98..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index c1496d038023..000000000000
--- a/testing/web-platform/tests/mixed-content/classic-data-worker-fetch/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: classic-data-worker-fetch
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "classic-data-worker-fetch",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/generic/common.js b/testing/web-platform/tests/mixed-content/generic/common.js
index 7b4c9e754a0f..12e9262ca075 100644
--- a/testing/web-platform/tests/mixed-content/generic/common.js
+++ b/testing/web-platform/tests/mixed-content/generic/common.js
@@ -184,29 +184,17 @@ function requestViaFetch(url) {
   return fetch(url);
 }
 
-function dedicatedWorkerUrlThatFetches(url) {
-  return `data:text/javascript,
-    fetch('${url}')
-      .then(() => postMessage(''),
-            () => postMessage(''));`;
-}
-
-function workerUrlThatImports(url) {
-  return `data:text/javascript,import '${url}';`;
-}
-
 /**
  * Creates a new Worker, binds message and error events wrapping them into.
  *     {@code worker.eventPromise} and posts an empty string message to start
  *     the worker.
  * @param {string} url The endpoint URL for the worker script.
- * @param {object} options The options for Worker constructor.
  * @return {Promise} The promise for success/error events.
  */
-function requestViaDedicatedWorker(url, options) {
+function requestViaWorker(url) {
   var worker;
   try {
-    worker = new Worker(url, options);
+    worker = new Worker(url);
   } catch (e) {
     return Promise.reject(e);
   }
@@ -216,29 +204,6 @@ function requestViaDedicatedWorker(url, options) {
   return worker.eventPromise;
 }
 
-// Returns a reference to a worklet object corresponding to a given type.
-function get_worklet(type) {
-  if (type == 'animation')
-    return CSS.animationWorklet;
-  if (type == 'layout')
-    return CSS.layoutWorklet;
-  if (type == 'paint')
-    return CSS.paintWorklet;
-  if (type == 'audio')
-    return new OfflineAudioContext(2,44100*40,44100).audioWorklet;
-
-  assert_unreached('unknown worklet type is passed.');
-  return undefined;
-}
-
-function requestViaWorklet(type, url) {
-  try {
-    return get_worklet(type).addModule(url);
-  } catch (e) {
-    return Promise.reject(e);
-  }
-}
-
 /**
  * Sets the href attribute on a navigable DOM element and performs a navigation
  *     by clicking it. To avoid navigating away from the current execution
diff --git a/testing/web-platform/tests/mixed-content/generic/mixed-content-test-case.js b/testing/web-platform/tests/mixed-content/generic/mixed-content-test-case.js
index 8708f5a9357d..f0e2d340fcff 100644
--- a/testing/web-platform/tests/mixed-content/generic/mixed-content-test-case.js
+++ b/testing/web-platform/tests/mixed-content/generic/mixed-content-test-case.js
@@ -65,14 +65,7 @@ function MixedContentTestCase(scenario, description, sanityChecker) {
     "iframe-tag": requestViaIframe,
     "img-tag":  requestViaImage,
     "script-tag": requestViaScript,
-    "worker-request":
-        url => requestViaDedicatedWorker(url),
-    "module-worker-top-level":
-        url => requestViaDedicatedWorker(url, {type: "module"}),
-    "module-data-worker-import":
-        url => requestViaDedicatedWorker(workerUrlThatImports(url), {type: "module"}),
-    "classic-data-worker-fetch":
-        url => requestViaDedicatedWorker(dedicatedWorkerUrlThatFetches(url), {}),
+    "worker-request": requestViaWorker,
     "xhr-request": requestViaXhr,
     "audio-tag": requestViaAudio,
     "video-tag": requestViaVideo,
@@ -83,6 +76,8 @@ function MixedContentTestCase(scenario, description, sanityChecker) {
     "websocket-request": requestViaWebSocket
   };
 
+  sanityChecker.checkScenario(scenario, resourceMap);
+
   // Mapping all expected MIME types to the scenario.
   var contentType = {
     "a-tag": "text/html",
@@ -93,12 +88,7 @@ function MixedContentTestCase(scenario, description, sanityChecker) {
     "iframe-tag": "text/html",
     "img-tag":  "image/png",
     "script-tag": "text/javascript",
-
     "worker-request": "application/javascript",
-    "module-worker-top-level": "application/javascript",
-    "module-data-worker-import": "application/javascript",
-    "classic-data-worker-fetch": "application/javascript",
-
     "xhr-request": "application/json",
     "audio-tag": "audio/wav",
     "video-tag": "video/ogg",
@@ -109,20 +99,6 @@ function MixedContentTestCase(scenario, description, sanityChecker) {
     "websocket-request": "application/json"
   };
 
-  for (const workletType of ['animation', 'audio', 'layout', 'paint']) {
-    resourceMap[`worklet-${workletType}-top-level`] =
-      url => requestViaWorklet(workletType, url);
-    contentType[`worklet-${workletType}-top-level`] =
-      "application/javascript";
-
-    resourceMap[`worklet-${workletType}-data-import`] =
-      url => requestViaWorklet(workletType, workerUrlThatImports(url));
-    contentType[`worklet-${workletType}-data-import`] =
-      "application/javascript";
-  }
-
-  sanityChecker.checkScenario(scenario, resourceMap);
-
   var mixed_content_test = async_test(description);
 
   function runTest() {
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ae4ebff13ced..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index aa3fc778fc47..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index c9d2d22c8a09..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 5202090bc564..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 2013b19c6b64..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index fbe8606d6561..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index c6c56e0c9f4c..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index c62ca1208dad..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 349a3731fca6..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 6536bef9032b..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 9632f6963f3b..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index fde3d3ab49c9..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 4fe1a650df7a..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 93d5a1b631bf..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 2810c3c159bb..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index afb1ac17cec5..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index e54f7ba9618b..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 7791db2e61f7..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index d50981f6dad5..000000000000
--- a/testing/web-platform/tests/mixed-content/module-data-worker-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-data-worker-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-data-worker-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 65c121204d4f..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 29d56963e798..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 25bbcf1e9e8a..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 5d34ff67cc53..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 347c57cb3a66..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ab991d2c8d25..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 775fcabb1beb..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 6a9a6437c8d1..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index e873d4a73d12..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ee6c6da0c3f6..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 2393202ae06d..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 64f777ea3d04..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 4950c32ae14f..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 7301b826e84c..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index b9a59ad49348..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index f1d99109db61..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 17e86bac43a9..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 744ad87bb24f..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index e04e9baeed86..000000000000
--- a/testing/web-platform/tests/mixed-content/module-worker-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: module-worker-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "module-worker-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/spec.src.json b/testing/web-platform/tests/mixed-content/spec.src.json
index 06d381d363ee..54479ef42821 100644
--- a/testing/web-platform/tests/mixed-content/spec.src.json
+++ b/testing/web-platform/tests/mixed-content/spec.src.json
@@ -235,17 +235,6 @@
         "link-css-tag",
         "xhr-request",
         "worker-request",
-        "module-worker-top-level",
-        "module-data-worker-import",
-        "classic-data-worker-fetch",
-        "worklet-animation-top-level",
-        "worklet-audio-top-level",
-        "worklet-layout-top-level",
-        "worklet-paint-top-level",
-        "worklet-animation-data-import",
-        "worklet-audio-data-import",
-        "worklet-layout-data-import",
-        "worklet-paint-data-import",
         "fetch-request",
         "a-tag",
         "object-tag",
diff --git a/testing/web-platform/tests/mixed-content/spec_json.js b/testing/web-platform/tests/mixed-content/spec_json.js
index 0868df220fb9..1bd1ecc8a26f 100644
--- a/testing/web-platform/tests/mixed-content/spec_json.js
+++ b/testing/web-platform/tests/mixed-content/spec_json.js
@@ -1 +1 @@
-var SPEC_JSON = {"test_expansion_schema": {"origin": ["same-host-https", "same-host-http", "cross-origin-https", "cross-origin-http", "same-host-wss", "same-host-ws", "cross-origin-wss", "cross-origin-ws"], "subresource": {"blockable": ["script-tag", "link-css-tag", "xhr-request", "worker-request", "module-worker-top-level", "module-data-worker-import", "classic-data-worker-fetch", "worklet-animation-top-level", "worklet-audio-top-level", "worklet-layout-top-level", "worklet-paint-top-level", "worklet-animation-data-import", "worklet-audio-data-import", "worklet-layout-data-import", "worklet-paint-data-import", "fetch-request", "a-tag", "object-tag", "picture-tag", "websocket-request", "link-prefetch-tag", "beacon-request"], "optionally-blockable": ["img-tag", "audio-tag", "video-tag"]}, "context_nesting": ["top-level", "sub-level"], "expectation": ["allowed", "blocked"], "expansion": ["default", "override"], "redirection": ["no-redirect", "keep-scheme-redirect", "swap-scheme-redirect"], "opt_in_method": ["no-opt-in", "http-csp", "meta-csp", "img-crossorigin"], "source_scheme": ["http", "https"]}, "specification": [{"test_expansion": [{"origin": ["cross-origin-http", "same-host-http"], "name": "opt-in-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": ["http-csp", "meta-csp"], "source_scheme": "https", "subresource": {"blockable": [], "optionally-blockable": "*"}}, {"origin": ["cross-origin-http", "same-host-http"], "name": "no-opt-in-allows", "redirection": "*", "expectation": "allowed", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "no-opt-in", "source_scheme": "https", "subresource": {"blockable": [], "optionally-blockable": "*"}}], "description": "Test behavior of optionally-blockable content", "specification_url": "http://www.w3.org/TR/mixed-content/#category-optionally-blockable", "name": "optionally-blockable", "title": "Optionally-blockable content"}, {"test_expansion": [{"origin": ["cross-origin-http", "same-host-http"], "name": "opt-in-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": ["http-csp", "meta-csp"], "source_scheme": "https", "subresource": {"blockable": "*", "optionally-blockable": []}}, {"origin": ["cross-origin-http", "same-host-http"], "name": "no-opt-in-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "no-opt-in", "source_scheme": "https", "subresource": {"blockable": "*", "optionally-blockable": []}}, {"origin": ["cross-origin-ws", "same-host-ws"], "name": "ws-downgrade-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": ["no-opt-in", "http-csp", "meta-csp"], "source_scheme": "https", "subresource": {"blockable": "websocket-request", "optionally-blockable": []}}], "description": "Test behavior of blockable content.", "specification_url": "http://www.w3.org/TR/mixed-content/#category-blockable", "name": "blockable", "title": "Blockable content"}, {"test_expansion": [{"origin": ["same-host-https"], "name": "allowed", "redirection": ["no-redirect", "keep-scheme-redirect"], "expectation": "allowed", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "*", "source_scheme": "https", "subresource": {"blockable": "*", "optionally-blockable": "*"}}, {"origin": ["same-host-wss"], "name": "websocket-allowed", "redirection": ["no-redirect", "keep-scheme-redirect"], "expectation": "allowed", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "*", "source_scheme": "https", "subresource": {"blockable": "websocket-request", "optionally-blockable": []}}], "description": "Test behavior of allowed content.", "specification_url": "http://www.w3.org/TR/mixed-content/", "name": "allowed", "title": "Allowed content"}], "excluded_tests": [{"origin": "*", "name": "Redundant-subresources", "redirection": "*", "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": "*", "source_scheme": "*", "subresource": {"blockable": ["a-tag"], "optionally-blockable": []}}, {"origin": ["same-host-https", "same-host-http", "cross-origin-https", "cross-origin-http"], "name": "Skip-origins-not-applicable-to-websockets", "redirection": "*", "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": "*", "source_scheme": "*", "subresource": {"blockable": ["websocket-request"], "optionally-blockable": []}}, {"origin": "*", "name": "TODO-opt-in-method-img-cross-origin", "redirection": "*", "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": "img-crossorigin", "source_scheme": "*", "subresource": {"blockable": "*", "optionally-blockable": "*"}}, {"origin": "*", "name": "Skip-redundant-for-opt-in-method", "redirection": ["keep-scheme-redirect", "swap-scheme-redirect"], "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": ["meta-csp", "img-crossorigin"], "source_scheme": "*", "subresource": {"blockable": "*", "optionally-blockable": "*"}}]};
+var SPEC_JSON = {"test_expansion_schema": {"origin": ["same-host-https", "same-host-http", "cross-origin-https", "cross-origin-http", "same-host-wss", "same-host-ws", "cross-origin-wss", "cross-origin-ws"], "subresource": {"blockable": ["script-tag", "link-css-tag", "xhr-request", "worker-request", "fetch-request", "a-tag", "object-tag", "picture-tag", "websocket-request", "link-prefetch-tag", "beacon-request"], "optionally-blockable": ["img-tag", "audio-tag", "video-tag"]}, "context_nesting": ["top-level", "sub-level"], "expectation": ["allowed", "blocked"], "expansion": ["default", "override"], "redirection": ["no-redirect", "keep-scheme-redirect", "swap-scheme-redirect"], "opt_in_method": ["no-opt-in", "http-csp", "meta-csp", "img-crossorigin"], "source_scheme": ["http", "https"]}, "specification": [{"test_expansion": [{"origin": ["cross-origin-http", "same-host-http"], "name": "opt-in-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": ["http-csp", "meta-csp"], "source_scheme": "https", "subresource": {"blockable": [], "optionally-blockable": "*"}}, {"origin": ["cross-origin-http", "same-host-http"], "name": "no-opt-in-allows", "redirection": "*", "expectation": "allowed", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "no-opt-in", "source_scheme": "https", "subresource": {"blockable": [], "optionally-blockable": "*"}}], "description": "Test behavior of optionally-blockable content", "specification_url": "http://www.w3.org/TR/mixed-content/#category-optionally-blockable", "name": "optionally-blockable", "title": "Optionally-blockable content"}, {"test_expansion": [{"origin": ["cross-origin-http", "same-host-http"], "name": "opt-in-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": ["http-csp", "meta-csp"], "source_scheme": "https", "subresource": {"blockable": "*", "optionally-blockable": []}}, {"origin": ["cross-origin-http", "same-host-http"], "name": "no-opt-in-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "no-opt-in", "source_scheme": "https", "subresource": {"blockable": "*", "optionally-blockable": []}}, {"origin": ["cross-origin-ws", "same-host-ws"], "name": "ws-downgrade-blocks", "redirection": "*", "expectation": "blocked", "expansion": "default", "context_nesting": "top-level", "opt_in_method": ["no-opt-in", "http-csp", "meta-csp"], "source_scheme": "https", "subresource": {"blockable": "websocket-request", "optionally-blockable": []}}], "description": "Test behavior of blockable content.", "specification_url": "http://www.w3.org/TR/mixed-content/#category-blockable", "name": "blockable", "title": "Blockable content"}, {"test_expansion": [{"origin": ["same-host-https"], "name": "allowed", "redirection": ["no-redirect", "keep-scheme-redirect"], "expectation": "allowed", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "*", "source_scheme": "https", "subresource": {"blockable": "*", "optionally-blockable": "*"}}, {"origin": ["same-host-wss"], "name": "websocket-allowed", "redirection": ["no-redirect", "keep-scheme-redirect"], "expectation": "allowed", "expansion": "default", "context_nesting": "top-level", "opt_in_method": "*", "source_scheme": "https", "subresource": {"blockable": "websocket-request", "optionally-blockable": []}}], "description": "Test behavior of allowed content.", "specification_url": "http://www.w3.org/TR/mixed-content/", "name": "allowed", "title": "Allowed content"}], "excluded_tests": [{"origin": "*", "name": "Redundant-subresources", "redirection": "*", "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": "*", "source_scheme": "*", "subresource": {"blockable": ["a-tag"], "optionally-blockable": []}}, {"origin": ["same-host-https", "same-host-http", "cross-origin-https", "cross-origin-http"], "name": "Skip-origins-not-applicable-to-websockets", "redirection": "*", "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": "*", "source_scheme": "*", "subresource": {"blockable": ["websocket-request"], "optionally-blockable": []}}, {"origin": "*", "name": "TODO-opt-in-method-img-cross-origin", "redirection": "*", "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": "img-crossorigin", "source_scheme": "*", "subresource": {"blockable": "*", "optionally-blockable": "*"}}, {"origin": "*", "name": "Skip-redundant-for-opt-in-method", "redirection": ["keep-scheme-redirect", "swap-scheme-redirect"], "expectation": "*", "expansion": "*", "context_nesting": "*", "opt_in_method": ["meta-csp", "img-crossorigin"], "source_scheme": "*", "subresource": {"blockable": "*", "optionally-blockable": "*"}}]};
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 99c2795851f6..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ea193eadbb0a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index f410e1cf8e8b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index cfda98f785f1..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index a85242a83345..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 48d74bc30817..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 7d0cdae613ee..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 94f97850ea7e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 1a895d0fd70a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ab90656e54ce..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 113460364e35..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index a636eef658b9..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 8aa7d05881f0..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 5ef502f0c29f..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 34b6be42bb5e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 1586df97fc5a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 73f621edff11..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 2b32f598852c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 35995bb976f0..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index c858da0c4b60..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 0387b165e1b7..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 34a4e1e532aa..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index b683d8267eb6..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 5655510609ff..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 0ccf4bc4229c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 7c54048c0a9c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 2d3eb78d6186..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 989f1ad50780..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 46bca306999c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 313f7755b482..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 033b1d9798f0..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index c4d4629746b3..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 90ad6006617b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 5111667254f6..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 7d54c015391f..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index e1a0ac5a997a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 812cec20e183..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index a36119761318..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-animation-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-animation-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-animation-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 81e57b110c0b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ec537f579233..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 0b8ddb9cc929..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index d2ab9e1e3251..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index e3b0cb811797..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 063c7b77c21c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 802b84c1899d..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 7e40482d496e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 1c77b65b666a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index c5ec8343c905..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 918aec37a419..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index b801db0de2e4..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 65d7c00892ce..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index bd3afe9856e0..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 45759c1b3177..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 5d2f67b7fff5..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index fbf57e8b6479..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index e297efb9433c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 6e1e6cba39cc..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 68329ff582ed..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 862abf012b55..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 9e8ca3cd5731..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 341e9584d94d..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 0bf45c0d5114..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 017a38884835..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index c7f37dee35c3..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 84c5ae0d05ac..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index b7f5cdc9c9c5..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index adb418f61a91..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index ce31e04d1b1c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 8197d981d8be..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 60a5b9ec6e24..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 035fe3bb0b13..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 56c5e14673e1..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index f1e134adbed1..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index ce5d3e1c0657..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 5c123ed6cb1a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 06aadc3c3ce3..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-audio-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-audio-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-audio-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index bcc60543ae09..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index e56443cb86bb..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 40569b7188d9..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 17226d674591..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 034c2f727de6..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 1ecd9d94e024..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index a60c79d490ff..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 88efeaf09455..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 2e33579ee35b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 7f1353c5477f..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 5cc77dd2e6bd..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 6af86dd96b3a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index e6a9c4c426d2..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 400622006fcf..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index b4be536c9232..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 0d7b7210a99f..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 708c0a5d75f2..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 2414d5f321c1..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index f0fa9aa60766..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 440630b5c299..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 51cf26bcc86d..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index d38c0259e95b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index f32666f28ac9..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 016ea765f53e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 47ba0d806743..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 6b339518948b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 349d1ae1e630..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index ba7834dff565..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index d1514320a5c9..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 42b9de520ea1..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 3a03aeae6267..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index c087917e88dd..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index f4192c219a49..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 82713253b046..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 35ad440c5285..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 58227b988f35..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index e43a2542b1b3..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 4e0db8fc4486..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-layout-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-layout-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-layout-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 84345fb74a58..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 52595a63b0f0..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 0844824ea72a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 8b5df2cacc71..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index b03a99c5e6a2..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 7180a72690d4..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index f228ae5dc8e8..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index ca0a9f47db39..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 7d38ae9f8d46..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index c8bb0051668a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index e97507d57490..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index a9b350b5c9df..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 81db7898f321..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 999411c6297b..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index de2d00317561..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 453c5cb95d01..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index fbf362903e17..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index a34698e9f7ad..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index bbd268ab31c2..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-data-import/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-data-import
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-data-import",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 45472963891f..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 6d519a352c42..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 2a317beae4e9..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/cross-origin-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 44d4b3d88524..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/keep-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index f1af455623f2..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index 6eb6e95ef68a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-http/top-level/swap-scheme-redirect/blockable/opt-in-blocks.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 9b5656b96138..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index 4fbf140e6603..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: http-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "http-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
deleted file mode 100644
index 46e2255e388e..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/http-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index d1b9d5d6139a..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/cross-origin-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
deleted file mode 100644
index c328f8fe8a52..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/same-host-http/top-level/no-redirect/blockable/opt-in-blocks.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index dc7cd63dceab..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/meta-csp/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: meta-csp
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: allowed">
-    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "meta-csp",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 1c7d29835bb8..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index cea0a88bacb6..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 224d7c767b5c..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/cross-origin-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: cross-origin-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "cross-origin-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index b1432e78ac28..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/keep-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index ce845cb3d521..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/no-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
deleted file mode 100644
index 1e9acdf88e29..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-http/top-level/swap-scheme-redirect/blockable/no-opt-in-blocks.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Blockable content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of blockable content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/#category-blockable">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-http
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: swap-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: blocked">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-http",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "swap-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "blocked"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
deleted file mode 100644
index 0ff9576d6038..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/keep-scheme-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: keep-scheme-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "keep-scheme-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html b/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
deleted file mode 100644
index d0e64b29b2dd..000000000000
--- a/testing/web-platform/tests/mixed-content/worklet-paint-top-level/no-opt-in/same-host-https/top-level/no-redirect/allowed/allowed.https.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<!-- DO NOT EDIT! Generated by mixed-content/generic/tools/generate.py using mixed-content/generic/template/test.release.html.template. -->
-<html>
-  <head>
-    <title>Mixed-Content: Allowed content</title>
-    <meta charset='utf-8'>
-    <meta name="description" content="Test behavior of allowed content.">
-    <link rel="author" title="Kristijan Burnik" href="burnik@chromium.org">
-    <link rel="help" href="http://www.w3.org/TR/mixed-content/">
-    <meta name="assert" content="opt_in_method: no-opt-in
-                                 origin: same-host-https
-                                 source_scheme: https
-                                 context_nesting: top-level
-                                 redirection: no-redirect
-                                 subresource: worklet-paint-top-level
-                                 expectation: allowed">
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/mixed-content/generic/common.js"></script>
-    <script src="/mixed-content/generic/mixed-content-test-case.js?pipe=sub"></script>
-  </head>
-  <body>
-    <script>
-      MixedContentTestCase(
-        {
-          "opt_in_method": "no-opt-in",
-          "origin": "same-host-https",
-          "source_scheme": "https",
-          "context_nesting": "top-level",
-          "redirection": "no-redirect",
-          "subresource": "worklet-paint-top-level",
-          "expectation": "allowed"
-        },
-        document.querySelector("meta[name=assert]").content,
-        new SanityChecker()
-      ).start();
-      </script>
-    <div id="log"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/payment-request/MerchantValidationEvent/complete-method.https.html b/testing/web-platform/tests/payment-request/MerchantValidationEvent/complete-method-manual.https.html
similarity index 92%
rename from testing/web-platform/tests/payment-request/MerchantValidationEvent/complete-method.https.html
rename to testing/web-platform/tests/payment-request/MerchantValidationEvent/complete-method-manual.https.html
index 4edfd54f40e4..99a10e9dc79b 100644
--- a/testing/web-platform/tests/payment-request/MerchantValidationEvent/complete-method.https.html
+++ b/testing/web-platform/tests/payment-request/MerchantValidationEvent/complete-method-manual.https.html
@@ -8,7 +8,7 @@
 <script>
 test(() => {
   const event = new MerchantValidationEvent("test");
-  assert_throws("InvalidStateError", () => {
+  assert_throws(() => {
     event.complete("");
   })
 }, "If event's isTrusted attribute is false, then then throw an InvalidStateError DOMException.");
diff --git a/testing/web-platform/tests/payment-request/MerchantValidationEvent/constructor.https.html b/testing/web-platform/tests/payment-request/MerchantValidationEvent/constructor.https.html
index ec8a4ff1ed09..952c0f734a30 100644
--- a/testing/web-platform/tests/payment-request/MerchantValidationEvent/constructor.https.html
+++ b/testing/web-platform/tests/payment-request/MerchantValidationEvent/constructor.https.html
@@ -6,9 +6,7 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>
-const applePay = Object.freeze({
-  supportedMethods: "https://apple.com/apple-pay",
-});
+const applePay = Object.freeze({ supportedMethods: "https://apple.com/apple-pay"});
 const basicCard = Object.freeze({ supportedMethods: "basic-card" });
 const defaultMethods = Object.freeze([basicCard, applePay]);
 const defaultDetails = Object.freeze({
@@ -58,69 +56,21 @@ test(() => {
 test(() => {
   const validationURL = "http://\u005B"; // invalid URL
   assert_throws(new TypeError(), () => {
-    new MerchantValidationEvent("test", { validationURL });
+    new MerchantValidationEvent("test", { validationURL })
   });
 }, "Must throw TypeError if initialized with an invalid URL.");
 
 test(() => {
   const validationURL = "";
-  const relativePaths = ["", ".", "/test"];
-  for (const path of relativePaths) {
+  const relativePaths = [
+    "",
+    ".",
+    "/test",
+  ]
+  for(const path of relativePaths ) {
     const event = new MerchantValidationEvent("test", { validationURL: path });
     const expected = new URL(path, document.location.href).href;
     assert_equals(event.validationURL, expected);
   }
 }, "Relative validationURLs use the document as the base.");
-
-test(() => {
-  const methodName = "https://pass.com";
-  const event = new MerchantValidationEvent("test", { methodName });
-  assert_idl_attribute(event, "methodName");
-  assert_equals(event.methodName, "https://pass.com");
-}, "Must have a methodName IDL attribute, which is initialized with to the methodName dictionary value.");
-
-test(() => {
-  const event = new MerchantValidationEvent("test", {});
-  assert_equals(event.methodName, "");
-}, "When no methodName is passed, methodName attribute defaults to the empty string");
-
-test(() => {
-  const validPMIs = [
-    "https://example.com/pay",
-    "https://example.com/pay?version=1",
-    "https://example.com/pay/version/1",
-    "basic-card",
-    "https://apple.com/apple-pay",
-    // special case for as default value
-    "",
-  ];
-  for (const methodName of validPMIs) {
-    const event = new MerchantValidationEvent("test", { methodName });
-    assert_equals(event.methodName, methodName);
-  }
-}, "MerchantValidationEvent can be constructed with valid PMIs");
-
-test(() => {
-  const invalidPMIs = [
-    // ❌ Contains Unicode character outside the valid ranges.
-    "basic-💳",
-    // ❌ Contains uppercase characters.
-    "Basic-Card",
-    // ❌ Contains Unicode characters outside the valid ranges.
-    "¡basic-*-card!",
-    // ❌ Uses http://, a username, and a password.
-    "http://username:password@example.com/pay",
-    // ❌ Uses unknown URI scheme.
-    "unknown://example.com/pay",
-  ];
-  for (const methodName of invalidPMIs) {
-    assert_throws(
-      new RangeError(),
-      () => {
-        const event = new MerchantValidationEvent("test", { methodName });
-      },
-      `expected to throw when constructed with invalid PMI: '${methodName}'`
-    );
-  }
-}, "MerchantValidationEvent can't be constructed with invalid PMIs");
 </script>
diff --git a/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodDetails-attribute.https.html b/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodDetails-attribute.https.html
index ec0aa96dddb4..a478c559d497 100644
--- a/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodDetails-attribute.https.html
+++ b/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodDetails-attribute.https.html
@@ -19,15 +19,4 @@ test(() => {
   assert_equals(test, "pass");
   assert_equals(event.methodDetails, methodDetails);
 }, "Must have a methodDetails IDL attribute, which is initialized with to the methodName dictionary value");
-
-test(() => {
-  const event = new PaymentMethodChangeEvent("test");
-  assert_equals(event.methodDetails, null, "methodDetails attribute must initialize to null");
-
-  const event2 = new PaymentMethodChangeEvent("test", { methodName: "basic-card" });
-  assert_equals(event2.methodDetails, null, "methodDetails attribute must initialize to null");
-
-  const event3 = new PaymentMethodChangeEvent("test", {});
-  assert_equals(event2.methodDetails, null, "methodDetails attribute must initialize to null");
-}, "The methodDetails member defaults to null");
 </script>
diff --git a/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodName-attribute.https.html b/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodName-attribute.https.html
index 176638c7852f..e6e0bf9a9197 100644
--- a/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodName-attribute.https.html
+++ b/testing/web-platform/tests/payment-request/PaymentMethodChangeEvent/methodName-attribute.https.html
@@ -14,15 +14,4 @@ test(() => {
   const { methodName } = event;
   assert_equals(methodName, "wpt-test");
 }, "Must have a methodName IDL attribute, which is initialized with to the methodName dictionary value");
-
-test(() => {
-  const event = new PaymentMethodChangeEvent("test");
-  assert_equals(event.methodName, "", "methodName attribute must initialize to empty string");
-
-  const event2 = new PaymentMethodChangeEvent("test", { methodDetails: {} });
-  assert_equals(event2.methodName, "", "methodName attribute must initialize to empty string");
-
-  const event3 = new PaymentMethodChangeEvent("test", {});
-  assert_equals(event3.methodName, "", "methodName attribute must initialize to empty string");
-}, "When no dictionary is passed, the methodName member defaults to the empty string");
 </script>
diff --git a/testing/web-platform/tests/tools/ci/ci_taskcluster.sh b/testing/web-platform/tests/tools/ci/ci_taskcluster.sh
new file mode 100755
index 000000000000..901ae520c7fe
--- /dev/null
+++ b/testing/web-platform/tests/tools/ci/ci_taskcluster.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -ex
+
+# This is allowed to fail
+./wpt manifest-download || echo
+
+if [ $1 == "firefox" ]; then
+    ./wpt run firefox --log-tbpl=../artifacts/log_tbpl.log --log-tbpl-level=info --log-wptreport=../artifacts/wpt_report.json --log-mach=- --this-chunk=$4 --total-chunks=$5 --test-type=$3 -y --install-browser --channel=$2 --no-pause --no-restart-on-unexpected --reftest-internal --install-fonts --no-fail-on-unexpected
+elif [ $1 == "chrome" ]; then
+    ./wpt run chrome --log-tbpl=../artifacts/log_tbpl.log --log-tbpl-level=info --log-wptreport=../artifacts/wpt_report.json --log-mach=- --channel=$2 --this-chunk=$4 --total-chunks=$5 --test-type=$3 -y  --no-pause --no-restart-on-unexpected --install-fonts --no-fail-on-unexpected
+fi
+gzip ../artifacts/wpt_report.json
diff --git a/testing/web-platform/tests/tools/ci/taskcluster-run.py b/testing/web-platform/tests/tools/ci/taskcluster-run.py
deleted file mode 100755
index 45416501e039..000000000000
--- a/testing/web-platform/tests/tools/ci/taskcluster-run.py
+++ /dev/null
@@ -1,101 +0,0 @@
-#!/usr/bin/env python
-
-import argparse
-import gzip
-import logging
-import os
-import shutil
-import subprocess
-
-browser_specific_args = {
-    "firefox": ["--install-browser"]
-}
-
-def tests_affected(commit_range):
-    output = subprocess.check_output([
-        "python", "./wpt", "tests-affected", "--null", commit_range
-    ], stderr=open(os.devnull, "w"))
-
-    tests = output.split("\0")
-
-    # Account for trailing null byte
-    if tests and not tests[-1]:
-        tests.pop()
-
-    return tests
-
-
-def find_wptreport(args):
-    parser = argparse.ArgumentParser()
-    parser.add_argument('--log-wptreport', action='store')
-    return parser.parse_known_args(args)[0].log_wptreport
-
-
-def gzip_file(filename):
-    with open(filename, 'rb') as f_in:
-        with gzip.open('%s.gz' % filename, 'wb') as f_out:
-            shutil.copyfileobj(f_in, f_out)
-
-
-def main(product, commit_range, wpt_args):
-    """Invoke the `wpt run` command according to the needs of the TaskCluster
-    continuous integration service."""
-
-    logger = logging.getLogger("tc-run")
-    logger.setLevel(logging.INFO)
-    handler = logging.StreamHandler()
-    handler.setFormatter(
-        logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
-    )
-    logger.addHandler(handler)
-
-    child = subprocess.Popen(['python', './wpt', 'manifest-download'])
-    child.wait()
-
-    if commit_range:
-        logger.info(
-            "Identifying tests affected in range '%s'..." % commit_range
-        )
-        tests = tests_affected(commit_range)
-        logger.info("Identified %s affected tests" % len(tests))
-
-        if not tests:
-            logger.info("Quitting because no tests were affected.")
-            return
-    else:
-        tests = []
-        logger.info("Running all tests")
-
-    wpt_args += [
-        "--log-tbpl=../artifacts/log_tbpl.log",
-        "--log-tbpl-level=info",
-        "--log-mach=-",
-        "-y",
-        "--no-pause",
-        "--no-restart-on-unexpected",
-        "--install-fonts"
-    ]
-    wpt_args += browser_specific_args.get(product, [])
-
-    command = ["python", "./wpt", "run"] + wpt_args + [product] + tests
-
-    logger.info("Executing command: %s" % " ".join(command))
-
-    subprocess.check_call(command)
-
-    wptreport = find_wptreport(wpt_args)
-    if wptreport:
-        gzip_file(wptreport)
-
-
-if __name__ == "__main__":
-    parser = argparse.ArgumentParser(description=main.__doc__)
-    parser.add_argument("--commit-range", action="store",
-                        help="""Git commit range. If specified, this will be
-                             supplied to the `wpt tests-affected` command to
-                             determine the list of test to execute""")
-    parser.add_argument("product", action="store",
-                        help="Browser to run tests in")
-    parser.add_argument("wpt_args", nargs="*",
-                        help="Arguments to forward to `wpt run` command")
-    main(**vars(parser.parse_args()))
diff --git a/testing/web-platform/tests/tools/ci/tests/test_jobs.py b/testing/web-platform/tests/tools/ci/tests/test_jobs.py
index e94f4b683055..e888ad884a18 100644
--- a/testing/web-platform/tests/tools/ci/tests/test_jobs.py
+++ b/testing/web-platform/tests/tools/ci/tests/test_jobs.py
@@ -1,14 +1,8 @@
-import sys
-
-import pytest
-
 from tools.ci import jobs
 
 default_jobs = set(["lint", "manifest_upload"])
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_testharness():
     assert jobs.get_jobs(["resources/testharness.js"]) == default_jobs | set(["resources_unittest"])
     assert jobs.get_jobs(["resources/testharness.js"],
@@ -19,8 +13,6 @@ def test_testharness():
                          includes=["resources_unittest"]) == set()
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_stability():
     assert jobs.get_jobs(["dom/historical.html"],
                          includes=["stability"]) == set(["stability"])
@@ -51,8 +43,6 @@ def test_default():
     assert jobs.get_jobs(["README.md"]) == default_jobs
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_tools_unittest():
     assert jobs.get_jobs(["tools/ci/test/test_jobs.py"],
                          includes=["tools_unittest"]) == set(["tools_unittest"])
@@ -62,8 +52,6 @@ def test_tools_unittest():
                          includes=["tools_unittest"]) == set()
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_wptrunner_unittest():
     assert jobs.get_jobs(["tools/wptrunner/wptrunner/wptrunner.py"],
                          includes=["wptrunner_unittest"]) == set(["wptrunner_unittest"])
@@ -71,8 +59,6 @@ def test_wptrunner_unittest():
                          includes=["wptrunner_unittest"]) == set()
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_build_css():
     assert jobs.get_jobs(["css/css-build-testsuites.sh"],
                          includes=["build_css"]) == set(["build_css"])
@@ -82,8 +68,6 @@ def test_build_css():
                          includes=["build_css"]) == set()
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_update_built():
     assert jobs.get_jobs(["2dcontext/foo.html"],
                          includes=["update_built"]) == set(["update_built"])
@@ -93,16 +77,12 @@ def test_update_built():
                          includes=["update_built"]) == set(["update_built"])
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_wpt_integration():
     assert jobs.get_jobs(["tools/wpt/wpt.py"],
                          includes=["wpt_integration"]) == set(["wpt_integration"])
     assert jobs.get_jobs(["tools/wptrunner/wptrunner/wptrunner.py"],
                          includes=["wpt_integration"]) == set(["wpt_integration"])
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_wpt_infrastructure():
     assert jobs.get_jobs(["tools/hammer.html"],
                          includes=["wptrunner_infrastructure"]) == set(["wptrunner_infrastructure"])
diff --git a/testing/web-platform/tests/tools/docker/start.sh b/testing/web-platform/tests/tools/docker/start.sh
index 9bf40ddb9301..c2fd91d96d4d 100755
--- a/testing/web-platform/tests/tools/docker/start.sh
+++ b/testing/web-platform/tests/tools/docker/start.sh
@@ -12,29 +12,24 @@
 set -ex
 
 REMOTE=${1:-https://github.com/web-platform-tests/wpt}
-REF=${2:-master}
-REVISION=${3:-FETCH_HEAD}
+BRANCH=${2:-master}
+REV=${3:-FETCH_HEAD}
 BROWSER=${4:-all}
 CHANNEL=${5:-nightly}
 
 cd ~
 
-mkdir web-platform-tests
-cd web-platform-tests
-git init
-git remote add origin ${REMOTE}
-
 # Initially we just fetch 50 commits in order to save several minutes of fetching
-git fetch --quiet --depth=50 origin ${REF}
-
-if [[ ! `git rev-parse --verify -q ${REVISION}` ]];
+git clone ${REMOTE} --single-branch --branch ${BRANCH} --no-checkout -q --depth=50 web-platform-tests
+cd web-platform-tests
+if [[ ! `git rev-parse --verify -q ${REV}` ]];
 then
     # But if for some reason the commit under test isn't in that range, we give in and
     # fetch everything
     git fetch -q --unshallow ${REMOTE}
-    git rev-parse --verify ${REVISION}
+    git rev-parse --verify ${REV}
 fi
-git checkout -b build ${REVISION}
+git checkout -b build ${REV}
 
 sudo sh -c './wpt make-hosts-file >> /etc/hosts'
 
diff --git a/testing/web-platform/tests/tools/serve/test_functional.py b/testing/web-platform/tests/tools/serve/test_functional.py
index e423461f4810..87268ffc00d4 100644
--- a/testing/web-platform/tests/tools/serve/test_functional.py
+++ b/testing/web-platform/tests/tools/serve/test_functional.py
@@ -38,9 +38,8 @@ def server_subprocesses():
 
 @pytest.fixture()
 def tempfile_name():
-    fd, name = tempfile.mkstemp()
+    name = tempfile.mkstemp()[1]
     yield name
-    os.close(fd)
     os.remove(name)
 
 
diff --git a/testing/web-platform/tests/tools/wpt/tests/test_wpt.py b/testing/web-platform/tests/tools/wpt/tests/test_wpt.py
index d0cb2b85c99e..8f8e5186c7cf 100644
--- a/testing/web-platform/tests/tools/wpt/tests/test_wpt.py
+++ b/testing/web-platform/tests/tools/wpt/tests/test_wpt.py
@@ -92,8 +92,6 @@ def test_help():
 
 
 @pytest.mark.slow
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12935")
 def test_list_tests(manifest_dir):
     """The `--list-tests` option should not produce an error under normal
     conditions."""
@@ -105,8 +103,6 @@ def test_list_tests(manifest_dir):
 
 
 @pytest.mark.slow
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12935")
 def test_list_tests_missing_manifest(manifest_dir):
     """The `--list-tests` option should not produce an error in the absence of
     a test manifest file."""
@@ -130,8 +126,6 @@ def test_list_tests_missing_manifest(manifest_dir):
 
 
 @pytest.mark.slow
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12935")
 def test_list_tests_invalid_manifest(manifest_dir):
     """The `--list-tests` option should not produce an error in the presence of
     a malformed test manifest file."""
@@ -372,8 +366,6 @@ def test_files_changed_ignore_rules():
 @pytest.mark.slow  # this updates the manifest
 @pytest.mark.xfail(sys.platform == "win32",
                    reason="Tests currently don't work on Windows for path reasons")
-@pytest.mark.skipif(sys.platform == "win32",
-                    reason="https://github.com/web-platform-tests/wpt/issues/12934")
 def test_tests_affected(capsys, manifest_dir):
     # This doesn't really work properly for random commits because we test the files in
     # the current working directory for references to the changed files, not the ones at
@@ -390,8 +382,6 @@ def test_tests_affected(capsys, manifest_dir):
 @pytest.mark.slow  # this updates the manifest
 @pytest.mark.xfail(sys.platform == "win32",
                    reason="Tests currently don't work on Windows for path reasons")
-@pytest.mark.skipif(sys.platform == "win32",
-                    reason="https://github.com/web-platform-tests/wpt/issues/12934")
 def test_tests_affected_null(capsys, manifest_dir):
     # This doesn't really work properly for random commits because we test the files in
     # the current working directory for references to the changed files, not the ones at
diff --git a/testing/web-platform/tests/tools/wptrunner/wptrunner/tests/test_testloader.py b/testing/web-platform/tests/tools/wptrunner/wptrunner/tests/test_testloader.py
index 7f1700ca879b..556b2b7f3fa4 100644
--- a/testing/web-platform/tests/tools/wptrunner/wptrunner/tests/test_testloader.py
+++ b/testing/web-platform/tests/tools/wptrunner/wptrunner/tests/test_testloader.py
@@ -4,8 +4,6 @@ import os
 import sys
 import tempfile
 
-import pytest
-
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
 
 from mozlog import structured
@@ -21,8 +19,6 @@ skip: true
 """
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="NamedTemporaryFile cannot be reopened on Win32")
 def test_filter_unicode():
     tests = make_mock_manifest(("test", "a", 10), ("test", "a/b", 10),
                                ("test", "c", 10))
diff --git a/testing/web-platform/tests/tools/wptserve/tests/functional/test_input_file.py b/testing/web-platform/tests/tools/wptserve/tests/functional/test_input_file.py
index b3f0fba48aba..014386e172fb 100644
--- a/testing/web-platform/tests/tools/wptserve/tests/functional/test_input_file.py
+++ b/testing/web-platform/tests/tools/wptserve/tests/functional/test_input_file.py
@@ -1,10 +1,8 @@
-import sys
+from wptserve.request import InputFile
 from io import BytesIO
-
 import pytest
 
-from wptserve.request import InputFile
-
+wptserve = pytest.importorskip("wptserve")
 bstr = b'This is a test document\nWith new lines\nSeveral in fact...'
 rfile = ''
 test_file = ''  # This will be used to test the InputFile functions against
@@ -120,8 +118,6 @@ def test_readlines():
     assert input_file.readlines() == test_file.readlines()
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_readlines_file_bigger_than_buffer():
     old_max_buf = InputFile.max_buffer_size
     InputFile.max_buffer_size = 10
@@ -139,8 +135,6 @@ def test_iter():
         assert a == b
 
 
-@pytest.mark.xfail(sys.platform == "win32",
-                   reason="https://github.com/web-platform-tests/wpt/issues/12949")
 def test_iter_file_bigger_than_buffer():
     old_max_buf = InputFile.max_buffer_size
     InputFile.max_buffer_size = 10
diff --git a/testing/web-platform/tests/tools/wptserve/tests/functional/test_pipes.py b/testing/web-platform/tests/tools/wptserve/tests/functional/test_pipes.py
index 83b2c621641c..ebdbc3ee57dd 100644
--- a/testing/web-platform/tests/tools/wptserve/tests/functional/test_pipes.py
+++ b/testing/web-platform/tests/tools/wptserve/tests/functional/test_pipes.py
@@ -63,8 +63,6 @@ class TestSub(TestUsingServer):
         expected = "localhost localhost %i" % self.server.port
         self.assertEqual(resp.read().rstrip(), expected)
 
-    @pytest.mark.xfail(sys.platform == "win32",
-                       reason="https://github.com/web-platform-tests/wpt/issues/12949")
     @pytest.mark.xfail(sys.version_info >= (3,), reason="wptserve only works on Py2")
     def test_sub_file_hash(self):
         resp = self.request("/sub_file_hash.sub.txt")
@@ -88,8 +86,6 @@ JwGFonfXwg=="""
         expected = "PASS"
         self.assertEqual(resp.read().rstrip(), expected)
 
-    @pytest.mark.xfail(sys.platform == "win32",
-                       reason="https://github.com/web-platform-tests/wpt/issues/12949")
     @pytest.mark.xfail(sys.version_info >= (3,), reason="wptserve only works on Py2")
     def test_sub_location(self):
         resp = self.request("/sub_location.sub.txt?query_string")
diff --git a/testing/web-platform/tests/tools/wptserve/tests/test_config.py b/testing/web-platform/tests/tools/wptserve/tests/test_config.py
index 2ee8287710e9..9710342664f9 100644
--- a/testing/web-platform/tests/tools/wptserve/tests/test_config.py
+++ b/testing/web-platform/tests/tools/wptserve/tests/test_config.py
@@ -1,7 +1,5 @@
 import logging
 import pickle
-
-from distutils.spawn import find_executable
 from logging import handlers
 
 import pytest
@@ -178,8 +176,6 @@ def test_ports_no_ssl():
         assert ports["ws"] == [1003]
 
 
-@pytest.mark.skipif(find_executable("openssl") is None,
-                    reason="requires OpenSSL")
 def test_ports_openssl():
     with config.ConfigBuilder(ports={"http": [1001], "https": [1002], "ws": [1003], "wss": [1004]},
                               ssl={"type": "openssl"}) as c:
diff --git a/testing/web-platform/tests/web-locks/acquire.tentative.https.any.js b/testing/web-platform/tests/web-locks/acquire.tentative.https.any.js
index ad2cfcd07e05..be0e837a89b4 100644
--- a/testing/web-platform/tests/web-locks/acquire.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/acquire.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: navigator.locks.request method
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/held.tentative.https.any.js b/testing/web-platform/tests/web-locks/held.tentative.https.any.js
index 7fc4c7354054..151e3b35f7da 100644
--- a/testing/web-platform/tests/web-locks/held.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/held.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: Lock held until callback result resolves
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/idlharness.tentative.https.any.js b/testing/web-platform/tests/web-locks/idlharness.tentative.https.any.js
deleted file mode 100644
index 168f57328b83..000000000000
--- a/testing/web-platform/tests/web-locks/idlharness.tentative.https.any.js
+++ /dev/null
@@ -1,34 +0,0 @@
-// META: script=/resources/WebIDLParser.js
-// META: script=/resources/idlharness.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
-
-'use strict';
-
-promise_test(async t => {
-  const srcs = ['./web-locks.idl', '/interfaces/html.idl'];
-  const [weblocks, html] = await Promise.all(
-    srcs.map(i => fetch(i).then(r => r.text())));
-
-  const idl_array = new IdlArray();
-  idl_array.add_idls(weblocks);
-  idl_array.add_dependency_idls(html);
-
-  try {
-    await navigator.locks.request('name', l => { self.lock = l; });
-  } catch (e) {
-    // Surfaced in idlharness.js's test_object below.
-  }
-
-  idl_array.add_objects({
-    LockManager: ['navigator.locks'],
-    Lock: ['lock'],
-  });
-
-  if (self.Window) {
-    idl_array.add_objects({ Navigator: ['navigator'] });
-  } else {
-    idl_array.add_objects({ WorkerNavigator: ['navigator'] });
-  }
-
-  idl_array.test();
-});
diff --git a/testing/web-platform/tests/web-locks/ifAvailable.tentative.https.any.js b/testing/web-platform/tests/web-locks/ifAvailable.tentative.https.any.js
index cfd1004000ac..a63caf6d588b 100644
--- a/testing/web-platform/tests/web-locks/ifAvailable.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/ifAvailable.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: ifAvailable option
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/interfaces-serviceworker.tentative.https.html b/testing/web-platform/tests/web-locks/interfaces-serviceworker.tentative.https.html
new file mode 100644
index 000000000000..ca4d768546a6
--- /dev/null
+++ b/testing/web-platform/tests/web-locks/interfaces-serviceworker.tentative.https.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Web Locks API: WebIDL tests in service worker</title>
+<link rel=help href="https://wicg.github.io/web-locks/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+'use strict';
+
+(async () => {
+  const scope = 'resources/does/not/exist';
+
+  let registration = await navigator.serviceWorker.getRegistration(scope);
+  if (registration)
+    await registration.unregister();
+  registration = await navigator.serviceWorker.register(
+      'resources/interfaces-serviceworker.js', {scope});
+
+  fetch_tests_from_worker(registration.installing);
+})();
+</script>
diff --git a/testing/web-platform/tests/web-locks/web-locks.idl b/testing/web-platform/tests/web-locks/interfaces.idl
similarity index 64%
rename from testing/web-platform/tests/web-locks/web-locks.idl
rename to testing/web-platform/tests/web-locks/interfaces.idl
index 351c1c5d8220..7c7d7c344df9 100644
--- a/testing/web-platform/tests/web-locks/web-locks.idl
+++ b/testing/web-platform/tests/web-locks/interfaces.idl
@@ -1,11 +1,24 @@
-[SecureContext]
-interface mixin NavigatorLocks {
-  readonly attribute LockManager locks;
-};
-Navigator includes NavigatorLocks;
-WorkerNavigator includes NavigatorLocks;
 
-[SecureContext, Exposed=(Window,Worker)]
+enum LockMode { "shared", "exclusive" };
+
+dictionary LockOptions {
+  LockMode mode = "exclusive";
+  boolean ifAvailable = false;
+};
+
+callback LockGrantedCallback = any (Lock lock);
+
+[Exposed=Window]
+partial interface Navigator {
+  [SecureContext] readonly attribute LockManager locks;
+};
+
+[Exposed=Worker]
+partial interface WorkerNavigator {
+  [SecureContext] readonly attribute LockManager locks;
+};
+
+[Exposed=(Window,Worker), SecureContext]
 interface LockManager {
   Promise<any> request(DOMString name,
                        LockGrantedCallback callback);
@@ -16,30 +29,18 @@ interface LockManager {
   Promise<LockManagerSnapshot> query();
 };
 
-callback LockGrantedCallback = Promise<any> (Lock lock);
-
-enum LockMode { "shared", "exclusive" };
-
-dictionary LockOptions {
-  LockMode mode = "exclusive";
-  boolean ifAvailable = false;
-  boolean steal = false;
-  AbortSignal signal;
+[Exposed=(Window,Worker), SecureContext]
+interface Lock {
+  readonly attribute DOMString name;
+  readonly attribute LockMode mode;
 };
 
 dictionary LockManagerSnapshot {
-  sequence<LockInfo> held;
   sequence<LockInfo> pending;
+  sequence<LockInfo> held;
 };
 
 dictionary LockInfo {
   DOMString name;
   LockMode mode;
-  DOMString clientId;
-};
-
-[SecureContext, Exposed=(Window,Worker)]
-interface Lock {
-  readonly attribute DOMString name;
-  readonly attribute LockMode mode;
 };
diff --git a/testing/web-platform/tests/web-locks/interfaces.tentative.https.any.js b/testing/web-platform/tests/web-locks/interfaces.tentative.https.any.js
new file mode 100644
index 000000000000..26b0bde2baf5
--- /dev/null
+++ b/testing/web-platform/tests/web-locks/interfaces.tentative.https.any.js
@@ -0,0 +1,26 @@
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+'use strict';
+
+promise_test(async t => {
+  const response = await fetch('interfaces.idl');
+  const idls = await response.text();
+
+  const idl_array = new IdlArray();
+
+  idl_array.add_untested_idls('[Exposed=Window] interface Navigator {};');
+  idl_array.add_untested_idls('[Exposed=Worker] interface WorkerNavigator {};');
+
+  idl_array.add_idls(idls);
+
+  let lock;
+  await navigator.locks.request('name', l => { lock = l; });
+
+  idl_array.add_objects({
+    LockManager: [navigator.locks],
+    Lock: [lock],
+  });
+
+  idl_array.test();
+});
diff --git a/testing/web-platform/tests/web-locks/lock-attributes.tentative.https.any.js b/testing/web-platform/tests/web-locks/lock-attributes.tentative.https.any.js
index d1c03103e0b7..e94fc95a1d4a 100644
--- a/testing/web-platform/tests/web-locks/lock-attributes.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/lock-attributes.tentative.https.any.js
@@ -1,5 +1,4 @@
 // META: title=Web Locks API: Lock Attributes
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/mode-exclusive.tentative.https.any.js b/testing/web-platform/tests/web-locks/mode-exclusive.tentative.https.any.js
index 8450e237c355..914046221998 100644
--- a/testing/web-platform/tests/web-locks/mode-exclusive.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/mode-exclusive.tentative.https.any.js
@@ -1,5 +1,4 @@
 // META: title=Web Locks API: Exclusive Mode
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/mode-mixed.tentative.https.any.js b/testing/web-platform/tests/web-locks/mode-mixed.tentative.https.any.js
index 0dfa7e511e07..3b304941862c 100644
--- a/testing/web-platform/tests/web-locks/mode-mixed.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/mode-mixed.tentative.https.any.js
@@ -1,5 +1,4 @@
 // META: title=Web Locks API: Mixed Modes
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/mode-shared.tentative.https.any.js b/testing/web-platform/tests/web-locks/mode-shared.tentative.https.any.js
index fc4a6012fab5..7c8a8448befc 100644
--- a/testing/web-platform/tests/web-locks/mode-shared.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/mode-shared.tentative.https.any.js
@@ -1,5 +1,4 @@
 // META: title=Web Locks API: Shared Mode
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/non-secure-context.tentative.any.js b/testing/web-platform/tests/web-locks/non-secure-context.tentative.any.js
index 94553591f372..e9726e6b4af0 100644
--- a/testing/web-platform/tests/web-locks/non-secure-context.tentative.any.js
+++ b/testing/web-platform/tests/web-locks/non-secure-context.tentative.any.js
@@ -1,5 +1,4 @@
-// META: title=Web Locks API: API not available in non-secure context
-// META: global=window,dedicatedworker,sharedworker
+// META title=Web Locks API: API not available in non-secure context
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js b/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js
index 88ffdb7f810d..fe7e0bb16ceb 100644
--- a/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: navigator.locks.query method - no locks held
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/query-order.tentative.https.any.js b/testing/web-platform/tests/web-locks/query-order.tentative.https.any.js
index 3317cd02eb9a..1810a969171f 100644
--- a/testing/web-platform/tests/web-locks/query-order.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/query-order.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: navigator.locks.query ordering
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/resource-names.tentative.https.any.js b/testing/web-platform/tests/web-locks/resource-names.tentative.https.any.js
index be7074bbb790..dbcd986abd92 100644
--- a/testing/web-platform/tests/web-locks/resource-names.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/resource-names.tentative.https.any.js
@@ -1,5 +1,4 @@
 // META: title=Web Locks API: Resources DOMString edge cases
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/resources/interfaces-serviceworker.js b/testing/web-platform/tests/web-locks/resources/interfaces-serviceworker.js
new file mode 100644
index 000000000000..f75295c9f7bc
--- /dev/null
+++ b/testing/web-platform/tests/web-locks/resources/interfaces-serviceworker.js
@@ -0,0 +1,29 @@
+'use strict';
+
+importScripts('/resources/testharness.js',
+              '/resources/WebIDLParser.js',
+              '/resources/idlharness.js');
+
+promise_test(async t => {
+  const response = await fetch('../interfaces.idl');
+  const idls = await response.text();
+
+  const idl_array = new IdlArray();
+
+  idl_array.add_untested_idls('[Exposed=Window] interface Navigator {};');
+  idl_array.add_untested_idls('[Exposed=Worker] interface WorkerNavigator {};');
+
+  idl_array.add_idls(idls);
+
+  let lock;
+  await navigator.locks.request('name', l => { lock = l; });
+
+  idl_array.add_objects({
+    LockManager: [navigator.locks],
+    Lock: [lock],
+  });
+
+  idl_array.test();
+}, 'Interface test');
+
+done();
diff --git a/testing/web-platform/tests/web-locks/secure-context.tentative.https.any.js b/testing/web-platform/tests/web-locks/secure-context.tentative.https.any.js
index 29ae7aea475f..2e1d391204f3 100644
--- a/testing/web-platform/tests/web-locks/secure-context.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/secure-context.tentative.https.any.js
@@ -1,5 +1,4 @@
 // META: title=Web Locks API: API requires secure context
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/signal.tentative.https.any.js b/testing/web-platform/tests/web-locks/signal.tentative.https.any.js
index 5b8acbbbebc5..424b219dc52a 100644
--- a/testing/web-platform/tests/web-locks/signal.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/signal.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: AbortSignal integration
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/web-locks/steal.tentative.https.any.js b/testing/web-platform/tests/web-locks/steal.tentative.https.any.js
index 7f9a53e0d631..ca99137a969d 100644
--- a/testing/web-platform/tests/web-locks/steal.tentative.https.any.js
+++ b/testing/web-platform/tests/web-locks/steal.tentative.https.any.js
@@ -1,6 +1,5 @@
 // META: title=Web Locks API: steal option
 // META: script=resources/helpers.js
-// META: global=window,dedicatedworker,sharedworker,serviceworker
 
 'use strict';
 
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html
deleted file mode 100644
index 9d65d872b987..000000000000
--- a/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-output-channel-count.https.html
+++ /dev/null
@@ -1,82 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>
-      Test the construction of AudioWorkletNode with real-time context
-    </title>
-    <script src="/resources/testharness.js"></script>
-    <script src="/resources/testharnessreport.js"></script>
-    <script src="/webaudio/resources/audit.js"></script>
-  </head>
-  <body>
-    <script id="layout-test-code">
-      const audit = Audit.createTaskRunner();
-      const context = new AudioContext();
-
-      (async function () {
-        await context.audioWorklet.addModule(
-            'processors/channel-count-processor.js');
-
-        // Test if the output channe count dynamically changes if the input
-        // and output is 1.
-        audit.define(
-            {label: 'Dynamically change the channel count to if unspecified.'},
-            (task, should) => {
-              // Use arbitrary parameters for the test.
-              const buffer = new AudioBuffer({
-                numberOfChannels: 17,
-                length: 1,
-                sampleRate: context.sampleRate,
-              });
-              const source = new AudioBufferSourceNode(context);
-              source.buffer = buffer;
-
-              const node = new AudioWorkletNode(context, 'channel-count', {
-                numberOfInputs: 1,
-                numberOfOutputs: 1,
-              });
-
-              node.port.onmessage = (message) => {
-                const expected = message.data;
-                should(expected.outputChannel,
-                       'The expected output channel count').beEqualTo(17);
-                task.done();
-              };
-
-              // We need to make an actual connection becasue the channel count
-              // change happen when the rendering starts. It is to test if the
-              // channel count adapts to the upstream node correctly.
-              source.connect(node).connect(context.destination);
-              source.start();
-            });
-
-        // Test if outputChannelCount is honored as expected even if the input
-        // and output is 1.
-        audit.define(
-            {label: 'Givien outputChannelCount must be honored.'},
-            (task, should) => {
-              const node = new AudioWorkletNode(
-                  context, 'channel-count', {
-                    numberOfInputs: 1,
-                    numberOfOutputs: 1,
-                    outputChannelCount: [2],
-                  });
-
-              node.port.onmessage = (message) => {
-                const expected = message.data;
-                should(expected.outputChannel,
-                       'The expected output channel count').beEqualTo(2);
-                task.done();
-              };
-
-              // We need to make an actual connection becasue the channel count
-              // change might happen when the rendering starts. It is to test
-              // if the specified channel count is kept correctly.
-              node.connect(context.destination);
-            });
-
-        audit.run();
-      })();
-    </script>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/channel-count-processor.js b/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/channel-count-processor.js
deleted file mode 100644
index 556459f46b30..000000000000
--- a/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/channel-count-processor.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * @class ChannelCountProcessor
- * @extends AudioWorkletProcessor
- */
-class ChannelCountProcessor extends AudioWorkletProcessor {
-  constructor(options) {
-    super(options);
-  }
-
-  process(inputs, outputs) {
-    this.port.postMessage({
-      inputChannel: inputs[0].length,
-      outputChannel: outputs[0].length
-    });
-    return false;
-  }
-}
-
-registerProcessor('channel-count', ChannelCountProcessor);
\ No newline at end of file