diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 349b3b074c07..28d3c7011aff 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -8983,10 +8983,6 @@
         "path": "IndexedDB/index_sort_order.htm",
         "url": "/IndexedDB/index_sort_order.htm"
       },
-      {
-        "path": "IndexedDB/interfaces.htm",
-        "url": "/IndexedDB/interfaces.htm"
-      },
       {
         "path": "IndexedDB/interfaces.html",
         "url": "/IndexedDB/interfaces.html"
@@ -10759,6 +10755,10 @@
         "path": "dom/nodes/Text-constructor.html",
         "url": "/dom/nodes/Text-constructor.html"
       },
+      {
+        "path": "dom/nodes/Text-splitText.html",
+        "url": "/dom/nodes/Text-splitText.html"
+      },
       {
         "path": "dom/nodes/attributes.html",
         "url": "/dom/nodes/attributes.html"
@@ -11803,6 +11803,10 @@
         "path": "html/dom/documents/dom-tree-accessors/document.title-08.html",
         "url": "/html/dom/documents/dom-tree-accessors/document.title-08.html"
       },
+      {
+        "path": "html/dom/documents/dom-tree-accessors/document.title-09.html",
+        "url": "/html/dom/documents/dom-tree-accessors/document.title-09.html"
+      },
       {
         "path": "html/dom/documents/dom-tree-accessors/nameditem-01.html",
         "url": "/html/dom/documents/dom-tree-accessors/nameditem-01.html"
@@ -16896,8 +16900,8 @@
         "url": "/web-animations/animation-node/idlharness.html"
       },
       {
-        "path": "web-animations/animation-timeline/animation-timeline.html",
-        "url": "/web-animations/animation-timeline/animation-timeline.html"
+        "path": "web-animations/animation-timeline/document-timeline.html",
+        "url": "/web-animations/animation-timeline/document-timeline.html"
       },
       {
         "path": "web-animations/animation-timeline/idlharness.html",
@@ -24821,7 +24825,7 @@
       }
     ]
   },
-  "rev": "20aef05e164be1ccbbd8f66192f01e778b5e5c18",
+  "rev": "40a9c4e9e4f99a738cd1a7602066c5e84d1b90b5",
   "url_base": "/",
   "version": 2
 }
\ No newline at end of file
diff --git a/testing/web-platform/meta/mozilla-sync b/testing/web-platform/meta/mozilla-sync
index af73402b0de1..a3063f835a9f 100644
--- a/testing/web-platform/meta/mozilla-sync
+++ b/testing/web-platform/meta/mozilla-sync
@@ -1 +1 @@
-821cd0c3a55889f05c04ed9b6c12c810cd1a6c0f
\ No newline at end of file
+eb7ac376c982330bc85c58e68fffc55aabef604c
\ No newline at end of file
diff --git a/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm b/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm
index 20b4890382da..10c04b6a8a73 100644
--- a/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm
+++ b/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm
@@ -11,6 +11,9 @@
 <script src=support.js></script>
 
 <script>
+    // Transaction may fire window.onerror in some implementations.
+    setup({allow_uncaught_exception:true});
+
     var db,
       events = [],
       t = async_test(document.title, {timeout: 10000})
diff --git a/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm b/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm
index 23e3dbb87529..89e8cb36ce64 100644
--- a/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm
+++ b/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm
@@ -13,6 +13,9 @@
 <script src="support.js"></script>
 
 <script>
+    // Transaction may fire window.onerror in some implementations.
+    setup({allow_uncaught_exception:true});
+
     var db,
       events = [],
       t = async_test(document.title, {timeout: 10000})
diff --git a/testing/web-platform/tests/IndexedDB/interfaces.htm b/testing/web-platform/tests/IndexedDB/interfaces.htm
deleted file mode 100644
index 644f4d178f47..000000000000
--- a/testing/web-platform/tests/IndexedDB/interfaces.htm
+++ /dev/null
@@ -1,64 +0,0 @@
-<!--
-Test converted from WebKit:
-http://trac.webkit.org/browser/trunk/LayoutTests/storage/indexeddb/resources/interfaces.js
--->
-
-<!DOCTYPE html>
-<!-- Submitted from TestTWF Paris -->
-<meta charset=utf-8>
-<title>Test IndexedDB's interfaces</title>
-<link rel=author href="mailto:romain.huet@gmail.com" title="Romain Huet">
-
-<script src=/resources/testharness.js></script>
-<script src=/resources/testharnessreport.js></script>
-<script src=support.js></script>
-
-<script>
-
-    test(function() {
-        assert_true('IDBCursor' in self);
-    }, "Test IDBCursor");
-
-    test(function() {
-        assert_true('IDBCursorWithValue' in self);
-    }, "Test IDBCursorWithValue");
-
-    test(function() {
-        assert_true('IDBDatabase' in self);
-    }, "Test IDBDatabase");
-
-    test(function() {
-        assert_true('IDBFactory' in self);
-    }, "Test IDBFactory");
-
-    test(function() {
-        assert_true('IDBIndex' in self);
-    }, "Test IDBIndex");
-
-    test(function() {
-        assert_true('IDBKeyRange' in self);
-    }, "Test IDBKeyRange");
-
-    test(function() {
-        assert_true('IDBObjectStore' in self);
-    }, "Test IDBObjectStore");
-
-    test(function() {
-        assert_true('IDBOpenDBRequest' in self);
-    }, "Test IDBOpenDBRequest");
-
-    test(function() {
-        assert_true('IDBRequest' in self);
-    }, "Test IDBRequest");
-
-    test(function() {
-        assert_true('IDBTransaction' in self);
-    }, "Test IDBTransaction");
-
-    test(function() {
-        assert_true('IDBVersionChangeEvent' in self);
-    }, "Test IDBVersionChangeEvent");
-
-</script>
-
-<div id=log></div>
diff --git a/testing/web-platform/tests/battery-status/battery-interface.js b/testing/web-platform/tests/battery-status/battery-interface.js
index 7542dc965fbc..7aac89381297 100644
--- a/testing/web-platform/tests/battery-status/battery-interface.js
+++ b/testing/web-platform/tests/battery-status/battery-interface.js
@@ -144,13 +144,6 @@
       assert_equals(battery.onchargingchange, null, desc);
     }, 'onchargingchange: treat array as null');
 
-    test(function() {
-      var desc = 'onchargingchange did not treat noncallable host object as null';
-      battery.onchargingchange = function() {};
-      battery.onchargingchange = Node;
-      assert_equals(battery.onchargingchange, null, desc);
-    }, 'onchargingchange: treat non-callable host object as null');
-
     // attribute EventHandler onchargingtimechange;
 
     test(function() {
@@ -214,13 +207,6 @@
       assert_equals(battery.onchargingtimechange, null, desc);
     }, 'onchargingtimechange: treat array as null');
 
-    test(function() {
-      var desc = 'onchargingtimechange did not treat noncallable host object as null';
-      battery.onchargingtimechange = function() {};
-      battery.onchargingtimechange = Node;
-      assert_equals(battery.onchargingtimechange, null, desc);
-    }, 'onchargingtimechange: treat non-callable host object as null');
-
     // attribute EventHandler ondischargingtimechange;
 
     test(function() {
@@ -284,13 +270,6 @@
       assert_equals(battery.ondischargingtimechange, null, desc);
     }, 'ondischargingtimechange: treat array as null');
 
-    test(function() {
-      var desc = 'ondischargingtimechange did not treat noncallable host object as null';
-      battery.ondischargingtimechange = function() {};
-      battery.ondischargingtimechange = Node;
-      assert_equals(battery.ondischargingtimechange, null, desc);
-    }, 'ondischargingtimechange: treat non-callable host object as null');
-
     // attribute EventHandler onlevelchange;
 
     test(function() {
@@ -354,13 +333,6 @@
       assert_equals(battery.onlevelchange, null, desc);
     }, 'onlevelchange: treat array as null');
 
-    test(function() {
-      var desc = 'onlevelchange did not treat noncallable host object as null';
-      battery.onlevelchange = function() {};
-      battery.onlevelchange = Node;
-      assert_equals(battery.onlevelchange, null, desc);
-    }, 'onlevelchange: treat non-callable host object as null');
-
     done();
 
   }, function () {});
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html b/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html
index 464a119a03df..d754218bfb1f 100644
--- a/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-appendData.html
@@ -24,6 +24,14 @@ function testNode(create, type) {
     assert_equals(node.data, "test")
   }, type + ".appendData('')")
 
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+    node.appendData(", append more 資料，測試資料");
+    assert_equals(node.data, "test, append more 資料，測試資料");
+    assert_equals(node.length, 25);
+  }, type + ".appendData(non-ASCII)")
+
   test(function() {
     var node = create()
     assert_equals(node.data, "test")
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html b/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html
index 25654bafedc6..ef31a79dcf48 100644
--- a/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-deleteData.html
@@ -7,22 +7,79 @@
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
-function testNode(node) {
+function testNode(create, type) {
   test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
     assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(5, 10) })
     assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(5, 0) })
+    assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(-1, 10) })
+    assert_throws("INDEX_SIZE_ERR", function() { node.deleteData(-1, 0) })
+  }, type + ".deleteData() out of bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(0, 2)
+    assert_equals(node.data, "st")
+  }, type + ".deleteData() at the start")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
     node.deleteData(2, 10)
     assert_equals(node.data, "te")
-  })
+  }, type + ".deleteData() at the end")
+
   test(function() {
-    node.data = "test"
+    var node = create()
     assert_equals(node.data, "test")
+
     node.deleteData(1, 1)
     assert_equals(node.data, "tst")
-  })
+  }, type + ".deleteData() in the middle")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(2, 0)
+    assert_equals(node.data, "test")
+
+    node.deleteData(0, 0)
+    assert_equals(node.data, "test")
+  }, type + ".deleteData() with zero count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(2, -1)
+    assert_equals(node.data, "te")
+  }, type + ".deleteData() with small negative count")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.deleteData(1, -0x100000000 + 2)
+    assert_equals(node.data, "tt")
+  }, type + ".deleteData() with large negative count")
+
+  test(function() {
+    var node = create()
+    node.data = "This is the character data test, append more 資料，更多測試資料";
+
+    node.deleteData(40, 5);
+    assert_equals(node.data, "This is the character data test, append 資料，更多測試資料");
+    node.deleteData(45, 2);
+    assert_equals(node.data, "This is the character data test, append 資料，更多資料");
+  }, type + ".deleteData() with non-ascii data")
 }
-test(function() {
-  testNode(document.createTextNode("test"))
-  testNode(document.createComment("test"))
-})
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
 </script>
diff --git a/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html b/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html
index a1f1b390c0ed..983e791dca2d 100644
--- a/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html
+++ b/testing/web-platform/tests/dom/nodes/CharacterData-insertData.html
@@ -7,22 +7,74 @@
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
-function testNode(node) {
+function testNode(create, type) {
   test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
     assert_throws("INDEX_SIZE_ERR", function() { node.insertData(5, "x") })
     assert_throws("INDEX_SIZE_ERR", function() { node.insertData(5, "") })
+  }, type + ".insertData() out of bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    assert_throws("INDEX_SIZE_ERR", function() { node.insertData(-1, "x") })
+    assert_throws("INDEX_SIZE_ERR", function() { node.insertData(-0x100000000 + 5, "x") })
+  }, type + ".insertData() negative out of bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(-0x100000000 + 2, "X")
+    assert_equals(node.data, "teXst")
+  }, type + ".insertData() negative in bounds")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(0, "")
+    assert_equals(node.data, "test")
+  }, type + ".insertData('')")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
+    node.insertData(0, "X")
+    assert_equals(node.data, "Xtest")
+  }, type + ".insertData() at the start")
+
+  test(function() {
+    var node = create()
+    assert_equals(node.data, "test")
+
     node.insertData(2, "X")
     assert_equals(node.data, "teXst")
-  })
+  }, type + ".insertData() in the middle")
+
   test(function() {
-    node.data = "test"
+    var node = create()
     assert_equals(node.data, "test")
+
     node.insertData(4, "ing")
     assert_equals(node.data, "testing")
-  })
+  }, type + ".insertData() at the end")
+
+  test(function() {
+    var node = create()
+    node.data = "This is the character data, append more 資料，測試資料";
+
+    node.insertData(26, " test");
+    assert_equals(node.data, "This is the character data test, append more 資料，測試資料");
+    node.insertData(48, "更多");
+    assert_equals(node.data, "This is the character data test, append more 資料，更多測試資料");
+  }, type + ".insertData() with non-ascii data")
 }
-test(function() {
-  testNode(document.createTextNode("test"))
-  testNode(document.createComment("test"))
-})
+
+testNode(function() { return document.createTextNode("test") }, "Text")
+testNode(function() { return document.createComment("test") }, "Comment")
 </script>
diff --git a/testing/web-platform/tests/dom/nodes/Text-splitText.html b/testing/web-platform/tests/dom/nodes/Text-splitText.html
new file mode 100644
index 000000000000..aec1cee52ed5
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Text-splitText.html
@@ -0,0 +1,53 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Text.splitText()</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-text-splittextoffset">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var text = document.createTextNode("camembert");
+  assert_throws("INDEX_SIZE_ERR", function () { text.splitText(10) });
+}, "Split text after end of data");
+
+test(function() {
+  var text = document.createTextNode("");
+  var new_text = text.splitText(0);
+  assert_equals(text.data, "");
+  assert_equals(new_text.data, "");
+}, "Split empty text");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(0);
+  assert_equals(text.data, "");
+  assert_equals(new_text.data, "comté");
+}, "Split text at beginning");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(5);
+  assert_equals(text.data, "comté");
+  assert_equals(new_text.data, "");
+}, "Split text at end");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(3);
+  assert_equals(text.data, "com");
+  assert_equals(new_text.data, "té");
+  assert_equals(new_text.parentNode, null);
+}, "Split root");
+
+test(function() {
+  var parent = document.createElement('div');
+  var text = document.createTextNode("bleu");
+  parent.appendChild(text);
+  var new_text = text.splitText(2);
+  assert_equals(text.data, "bl");
+  assert_equals(new_text.data, "eu");
+  assert_equals(text.nextSibling, new_text);
+  assert_equals(new_text.parentNode, parent);
+}, "Split child");
+</script>
diff --git a/testing/web-platform/tests/encoding/api-invalid-label.html b/testing/web-platform/tests/encoding/api-invalid-label.html
index 04f939a789d8..2f2fd6eb0c68 100644
--- a/testing/web-platform/tests/encoding/api-invalid-label.html
+++ b/testing/web-platform/tests/encoding/api-invalid-label.html
@@ -2,13 +2,32 @@
 <title>Encoding API: invalid label</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="resources/encodings.js"></script>
 <script>
+var tests = ["invalid-invalidLabel"];
+setup(function() {
+  encodings_table.forEach(function(section) {
+    section.encodings.filter(function(encoding) {
+      return encoding.name !== 'replacement';
+    }).forEach(function(encoding) {
+      encoding.labels.forEach(function(label) {
+        ["\u0000", "\u000b", "\u00a0", "\u2028", "\u2029"].forEach(function(ws) {
+          tests.push(ws + label);
+          tests.push(label + ws);
+          tests.push(ws + label + ws);
+        });
+      });
+    });
+  });
+});
 
-var invalidLabel = "invalid-invalidLabel"
-
-test(function() {
-    assert_throws(new RangeError(), function() { new TextEncoder(invalidLabel); });
-    assert_throws(new RangeError(), function() { new TextDecoder(invalidLabel); });
-}, 'Invalid label "' + invalidLabel + '" should be rejected by API.');
+tests.forEach(function(input) {
+  test(function() {
+    assert_throws(new RangeError(), function() { new TextEncoder(input); });
+  }, 'Invalid label ' + format_value(input) + ' should be rejected by TextEncoder.');
 
+  test(function() {
+    assert_throws(new RangeError(), function() { new TextDecoder(input); });
+  }, 'Invalid label ' + format_value(input) + ' should be rejected by TextDecoder.');
+});
 </script>
diff --git a/testing/web-platform/tests/encoding/resources/text-plain-charset.py b/testing/web-platform/tests/encoding/resources/text-plain-charset.py
new file mode 100644
index 000000000000..a1c07e70189b
--- /dev/null
+++ b/testing/web-platform/tests/encoding/resources/text-plain-charset.py
@@ -0,0 +1,3 @@
+def main(request, response):
+  response.headers.set("Content-Type", "text/plain;charset=" + request.GET.first("label"))
+  response.content = "hello encoding"
diff --git a/testing/web-platform/tests/encoding/single-byte-decoder.html b/testing/web-platform/tests/encoding/single-byte-decoder.html
index 62e34cfb3069..eb463e1add8e 100644
--- a/testing/web-platform/tests/encoding/single-byte-decoder.html
+++ b/testing/web-platform/tests/encoding/single-byte-decoder.html
@@ -86,7 +86,7 @@
      async_test(function(t) {
        var frame = document.createElement("iframe"),
            name = compatibility_names[encoding.name] || encoding.name;
-       frame.src = "resources/single-byte-raw.py?label=" + label
+       frame.src = "resources/text-plain-charset.py?label=" + label
        frame.onload = t.step_func_done(function() {
          assert_equals(frame.contentDocument.characterSet, name)
          assert_equals(frame.contentDocument.inputEncoding, name)
diff --git a/testing/web-platform/tests/encoding/textdecoder-labels.html b/testing/web-platform/tests/encoding/textdecoder-labels.html
index 5a56ff9cb6db..1f3202c963eb 100644
--- a/testing/web-platform/tests/encoding/textdecoder-labels.html
+++ b/testing/web-platform/tests/encoding/textdecoder-labels.html
@@ -4,22 +4,33 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/encodings.js"></script>
 <script>
-
-encodings_table.forEach(function(section) {
+var tests = [];
+setup(function() {
+  var whitespace = [' ', '\t', '\n', '\f', '\r'];
+  encodings_table.forEach(function(section) {
     section.encodings.filter(function(encoding) {
-        return encoding.name !== 'replacement';
+      return encoding.name !== 'replacement';
     }).forEach(function(encoding) {
-        var name = encoding.name;
-        encoding.labels.forEach(function(label) {
-            test(function(){
-              assert_equals(new TextDecoder(label).encoding, encoding.name,
-                            'label for encoding should match');
-              assert_equals(new TextDecoder(label.toUpperCase()).encoding,
-                            encoding.name,
-                            'label matching should be case-insensitive');
-            }, 'name=' + name + ' label=' + label);
+      var name = encoding.name;
+      encoding.labels.forEach(function(label) {
+        tests.push([label, encoding.name]);
+        whitespace.forEach(function(ws) {
+          tests.push([ws + label, encoding.name]);
+          tests.push([label + ws, encoding.name]);
+          tests.push([ws + label + ws, encoding.name]);
         });
+      });
     });
+  });
 });
 
+tests.forEach(function(t) {
+  var input = t[0], output = t[1];
+  test(function() {
+    assert_equals(new TextDecoder(input).encoding, output,
+                  'label for encoding should match');
+    assert_equals(new TextDecoder(input.toUpperCase()).encoding, output,
+                  'label matching should be case-insensitive');
+  }, format_value(input) + " => " + format_value(output));
+});
 </script>
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-09.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-09.html
new file mode 100644
index 000000000000..731d78cc14f3
--- /dev/null
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/document.title-09.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#document.title">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var SVG_NAMESPACE = "http://www.w3.org/2000/svg";
+
+function newSVGDocument() {
+  return document.implementation.createDocument(SVG_NAMESPACE, "svg");
+}
+
+test(function() {
+  var doc = newSVGDocument();
+  assert_equals(doc.title, "");
+  var child = doc.createElementNS(SVG_NAMESPACE, "x-child");
+  doc.documentElement.appendChild(child);
+  doc.title = "foo";
+  var lastChild = doc.documentElement.lastChild;
+  assert_equals(lastChild.namespaceURI, SVG_NAMESPACE);
+  assert_equals(lastChild.localName, "title");
+  assert_equals(lastChild.textContent, "foo");
+  assert_equals(doc.title, "foo");
+}, "No title element in SVG document");
+
+test(function() {
+  var doc = newSVGDocument();
+  var title = doc.createElementNS(SVG_NAMESPACE, "title");
+  title.textContent = "foo";
+  doc.documentElement.appendChild(title)
+  assert_equals(doc.title, "foo");
+  doc.title += "bar";
+  assert_equals(title.textContent, "foobar");
+  assert_equals(title.childNodes.length, 1);
+  assert_true(title.childNodes[0] instanceof Text);
+  assert_equals(doc.title, "foobar");
+  doc.title = "";
+  assert_equals(title.textContent, "");
+  assert_equals(doc.title, "");
+  assert_equals(title.childNodes.length, 0);
+}, "Title element in SVG document");
+
+test(function() {
+  var doc = newSVGDocument();
+  var title = doc.createElementNS(SVG_NAMESPACE, "title");
+  title.textContent = "foo";
+  var child = doc.createElementNS(SVG_NAMESPACE, "x-child");
+  child.appendChild(title);
+  doc.documentElement.appendChild(child);
+  assert_equals(doc.title, "");
+}, "Title element not child of SVG root");
+
+test(function() {
+  var doc = newSVGDocument();
+  var title = doc.createElement("title");
+  title.textContent = "foo";
+  doc.documentElement.appendChild(title);
+  assert_equals(doc.title, "");
+}, "Title element not in SVG namespace");
+</script>
diff --git a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html
index 1ff039915e1b..843acbd8dad1 100644
--- a/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html
+++ b/testing/web-platform/tests/html/dom/documents/dom-tree-accessors/nameditem-06.html
@@ -63,9 +63,7 @@ test(function() {
   assert_equals(img2.id, "test4");
 
   assert_false("test4" in document, '"test4" in document should be false');
-  var collection = document.test4;
-  assert_class_string(collection, "HTMLCollection", "collection should be an HTMLCollection");
-  assert_array_equals(collection, [img1, img2]);
+  assert_equals(document.test4, undefined);
 }, "If there are two imgs, nothing should be returned. (id)");
 
 test(function() {
diff --git a/testing/web-platform/tests/html/dom/reflection.js b/testing/web-platform/tests/html/dom/reflection.js
index 4010d7e30480..7bd41d516225 100644
--- a/testing/web-platform/tests/html/dom/reflection.js
+++ b/testing/web-platform/tests/html/dom/reflection.js
@@ -373,7 +373,7 @@ ReflectionTests.typeMap = {
                      {toString:function() {return 2;}, valueOf: null},
                      {valueOf:function() {return 3;}}],
         "domExpected": function(val) {
-            var parsed = ReflectionTests.parseNonneg(val + "");
+            var parsed = ReflectionTests.parseNonneg(String(val));
             if (parsed === false || parsed > maxInt || parsed < minInt) {
                 return null;
             }
@@ -409,7 +409,7 @@ ReflectionTests.typeMap = {
                      {toString:function() {return 2;}, valueOf: null},
                      {valueOf:function() {return 3;}}],
         "domExpected": function(val) {
-            var parsed = ReflectionTests.parseNonneg(val + "");
+            var parsed = ReflectionTests.parseNonneg(String(val));
             // Note maxInt, not maxUnsigned.
             if (parsed === false || parsed < 0 || parsed > maxInt) {
                 return null;
@@ -450,7 +450,7 @@ ReflectionTests.typeMap = {
                      {toString:function() {return 2;}, valueOf: null},
                      {valueOf:function() {return 3;}}],
         "domExpected": function(val) {
-            var parsed = ReflectionTests.parseNonneg(val + "");
+            var parsed = ReflectionTests.parseNonneg(String(val));
             // Note maxInt, not maxUnsigned.
             if (parsed === false || parsed < 1 || parsed > maxInt) {
                 return null;
@@ -696,7 +696,7 @@ ReflectionTests.doReflects = function(data, idlName, idlObj, domName, domObj) {
             }
             try {
                 domObj.setAttribute(domName, domTests[i]);
-                ReflectionHarness.test(domObj.getAttribute(domName), domTests[i] + "", "setAttribute() to " + ReflectionHarness.stringRep(domTests[i]) + " followed by getAttribute()");
+                ReflectionHarness.test(domObj.getAttribute(domName), String(domTests[i]), "setAttribute() to " + ReflectionHarness.stringRep(domTests[i]) + " followed by getAttribute()");
                 ReflectionHarness.test(idlObj[idlName], domExpected[i], "setAttribute() to " + ReflectionHarness.stringRep(domTests[i]) + " followed by IDL get");
                 if (ReflectionHarness.catchUnexpectedExceptions) {
                     ReflectionHarness.success();
diff --git a/testing/web-platform/tests/html/semantics/interfaces.html b/testing/web-platform/tests/html/semantics/interfaces.html
index d3b2a23e27cd..c08fea82e523 100644
--- a/testing/web-platform/tests/html/semantics/interfaces.html
+++ b/testing/web-platform/tests/html/semantics/interfaces.html
@@ -9,22 +9,25 @@
 <script src=interfaces.js></script>
 <div id="log"></div>
 <script>
-test(function() {
-  elements.forEach(function(a) {
-    test(function() {
-      var e = document.createElement(a[0]), i = "HTML" + a[1] + "Element";
-      assert_class_string(e, i,
-                          "Element " + a[0] + " should have " + i +
-                          " as its primary interface.");
-      assert_true(e instanceof window[i],
-                  "Element " + a[0] + " should implement " + i + ".");
-      assert_true(e instanceof HTMLElement,
-                  "Element " + a[0] + " should implement HTMLElement.");
-      assert_true(e instanceof Element,
-                  "Element " + a[0] + " should implement Element.");
-      assert_true(e instanceof Node,
-                  "Element " + a[0] + " should implement Node.");
-    }, "Interfaces for " + a[0])
-  })
+function do_test(local_name, iface) {
+  test(function() {
+    var e = document.createElement(local_name), i = "HTML" + iface + "Element";
+    assert_class_string(e, i,
+                        "Element " + local_name + " should have " + i +
+                        " as its primary interface.");
+    assert_true(e instanceof window[i],
+                "Element " + local_name + " should implement " + i + ".");
+    assert_true(e instanceof HTMLElement,
+                "Element " + local_name + " should implement HTMLElement.");
+    assert_true(e instanceof Element,
+                "Element " + local_name + " should implement Element.");
+    assert_true(e instanceof Node,
+                "Element " + local_name + " should implement Node.");
+  }, "Interfaces for " + local_name);
+}
+
+elements.forEach(function(a) {
+  do_test(a[0], a[1]);
+  do_test(a[0].toUpperCase(), a[1]);
 })
 </script>
diff --git a/testing/web-platform/tests/html/semantics/interfaces.js b/testing/web-platform/tests/html/semantics/interfaces.js
index 5f5d2d908fab..3609e36bf483 100644
--- a/testing/web-platform/tests/html/semantics/interfaces.js
+++ b/testing/web-platform/tests/html/semantics/interfaces.js
@@ -134,5 +134,6 @@ var elements = [
   ["dialog", "Dialog"],
   ["figcaption", ""],
   ["summary", ""],
-  ["track", "Track"]
+  ["track", "Track"],
+  ["foo", "Unknown"]
 ];
diff --git a/testing/web-platform/tests/media-source/mediasource-config-changes.js b/testing/web-platform/tests/media-source/mediasource-config-changes.js
index 586e25f2b305..2ccc1e1a05d1 100644
--- a/testing/web-platform/tests/media-source/mediasource-config-changes.js
+++ b/testing/web-platform/tests/media-source/mediasource-config-changes.js
@@ -97,5 +97,5 @@ function mediaSourceConfigChangeTest(directory, idA, idB, description)
                 });
             });
         });
-    }, description, { timeout: 10000 } );
+    }, description);
 };
diff --git a/testing/web-platform/tests/media-source/mediasource-duration.html b/testing/web-platform/tests/media-source/mediasource-duration.html
index ca6b25de73fc..c0a33f3421c8 100644
--- a/testing/web-platform/tests/media-source/mediasource-duration.html
+++ b/testing/web-platform/tests/media-source/mediasource-duration.html
@@ -211,7 +211,7 @@
                       test.done();
                   });
               });
-          }, 'Test setting same duration multiple times does not fire duplicate durationchange', {timeout: 2500});
+          }, 'Test setting same duration multiple times does not fire duplicate durationchange');
         </script>
     </body>
 </html>
diff --git a/testing/web-platform/tests/media-source/mediasource-getvideoplaybackquality.html b/testing/web-platform/tests/media-source/mediasource-getvideoplaybackquality.html
index d813d631f955..1c71968fc159 100644
--- a/testing/web-platform/tests/media-source/mediasource-getvideoplaybackquality.html
+++ b/testing/web-platform/tests/media-source/mediasource-getvideoplaybackquality.html
@@ -65,7 +65,7 @@
                   assert_greater_than(timeUpdateCount, 2, "timeUpdateCount");
                   test.done();
               });
-          }, "Test HTMLVideoElement.getVideoPlaybackQuality() with MediaSource API", {timeout: 5000});
+          }, "Test HTMLVideoElement.getVideoPlaybackQuality() with MediaSource API");
         </script>
     </body>
 </html>
diff --git a/testing/web-platform/tests/media-source/mediasource-play.html b/testing/web-platform/tests/media-source/mediasource-play.html
index 73153462d770..928aa72f3317 100644
--- a/testing/web-platform/tests/media-source/mediasource-play.html
+++ b/testing/web-platform/tests/media-source/mediasource-play.html
@@ -38,7 +38,7 @@
                   mediaSource.endOfStream();
                   mediaElement.play();
               });
-          }, "Test normal playback case with MediaSource API", {timeout: 5000});
+          }, "Test normal playback case with MediaSource API");
         </script>
     </body>
 </html>
diff --git a/testing/web-platform/tests/media-source/mediasource-seek-during-pending-seek.html b/testing/web-platform/tests/media-source/mediasource-seek-during-pending-seek.html
index b12903289dcc..4b415a6df2b5 100644
--- a/testing/web-platform/tests/media-source/mediasource-seek-during-pending-seek.html
+++ b/testing/web-platform/tests/media-source/mediasource-seek-during-pending-seek.html
@@ -63,7 +63,7 @@
                   test.done();
               });
 
-          }, 'Test seeking to a new location before transitioning beyond HAVE_METADATA.', {timeout: 10000} );
+          }, 'Test seeking to a new location before transitioning beyond HAVE_METADATA.');
 
           mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
           {
@@ -136,7 +136,7 @@
                   assert_greater_than(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater than HAVE_CURRENT_DATA');
                   test.done();
               });
-          }, 'Test seeking to a new location during a pending seek.', {timeout: 10000} );
+          }, 'Test seeking to a new location during a pending seek.');
         </script>
     </body>
 </html>
diff --git a/testing/web-platform/tests/media-source/mediasource-util.js b/testing/web-platform/tests/media-source/mediasource-util.js
index de1560e17ba0..0271fc5caee7 100644
--- a/testing/web-platform/tests/media-source/mediasource-util.js
+++ b/testing/web-platform/tests/media-source/mediasource-util.js
@@ -1,6 +1,4 @@
 (function(window) {
-    setup({ timeout: 12000 });
-
     var SEGMENT_INFO_LIST = [
 	{
 	    url: 'mp4/test.mp4',
diff --git a/testing/web-platform/tests/resources/idlharness.js b/testing/web-platform/tests/resources/idlharness.js
index 170b5835392d..b8a87c669900 100644
--- a/testing/web-platform/tests/resources/idlharness.js
+++ b/testing/web-platform/tests/resources/idlharness.js
@@ -555,8 +555,8 @@ function IdlInterface(obj, is_callback) {
     this.members = obj.members.map(function(m){return new IdlInterfaceMember(m); });
     if (this.has_extended_attribute("Unforgeable")) {
         this.members
-            .filter(m => !m["static"] && (m.type == "attribute" || m.type == "operation"))
-            .forEach(m => m.isUnforgeable = true);
+            .filter(function(m) { return !m["static"] && (m.type == "attribute" || m.type == "operation"); })
+            .forEach(function(m) { return m.isUnforgeable = true; });
     }
 
     /**
diff --git a/testing/web-platform/tests/resources/testharness.js b/testing/web-platform/tests/resources/testharness.js
index 67b0f406c08f..981938cbc23d 100644
--- a/testing/web-platform/tests/resources/testharness.js
+++ b/testing/web-platform/tests/resources/testharness.js
@@ -368,8 +368,20 @@ policies and contribution forms [3].
         self.addEventListener("message",
                 function(event) {
                     if (event.data.type && event.data.type === "connect") {
-                        this_obj._add_message_port(event.ports[0]);
-                        event.ports[0].start();
+                        if (event.ports && event.ports[0]) {
+                            // If a MessageChannel was passed, then use it to
+                            // send results back to the main window.  This
+                            // allows the tests to work even if the browser
+                            // does not fully support MessageEvent.source in
+                            // ServiceWorkers yet.
+                            this_obj._add_message_port(event.ports[0]);
+                            event.ports[0].start();
+                        } else {
+                            // If there is no MessageChannel, then attempt to
+                            // use the MessageEvent.source to send results
+                            // back to the main window.
+                            this_obj._add_message_port(event.source);
+                        }
                     }
                 });
 
@@ -1476,15 +1488,24 @@ policies and contribution forms [3].
         var message_port;
 
         if (is_service_worker(worker)) {
-            // The ServiceWorker's implicit MessagePort is currently not
-            // reliably accessible from the ServiceWorkerGlobalScope due to
-            // Blink setting MessageEvent.source to null for messages sent via
-            // ServiceWorker.postMessage(). Until that's resolved, create an
-            // explicit MessageChannel and pass one end to the worker.
-            var message_channel = new MessageChannel();
-            message_port = message_channel.port1;
-            message_port.start();
-            worker.postMessage({type: "connect"}, [message_channel.port2]);
+            if (window.MessageChannel) {
+                // The ServiceWorker's implicit MessagePort is currently not
+                // reliably accessible from the ServiceWorkerGlobalScope due to
+                // Blink setting MessageEvent.source to null for messages sent
+                // via ServiceWorker.postMessage(). Until that's resolved,
+                // create an explicit MessageChannel and pass one end to the
+                // worker.
+                var message_channel = new MessageChannel();
+                message_port = message_channel.port1;
+                message_port.start();
+                worker.postMessage({type: "connect"}, [message_channel.port2]);
+            } else {
+                // If MessageChannel is not available, then try the
+                // ServiceWorker.postMessage() approach using MessageEvent.source
+                // on the other end.
+                message_port = navigator.serviceWorker;
+                worker.postMessage({type: "connect"});
+            }
         } else if (is_shared_worker(worker)) {
             message_port = worker.port;
         } else {
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js
index 3e827382bd14..49b8db4cd710 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js
@@ -22,12 +22,12 @@ cache_test(function(cache) {
 cache_test(function(cache) {
     return assert_promise_rejects(
       cache.add('javascript://this-is-not-http-mmkay'),
-      'NetworkError',
-      'Cache.add should throw a NetworkError for non-HTTP/HTTPS URLs.');
+      new TypeError(),
+      'Cache.add should throw a TypeError for non-HTTP/HTTPS URLs.');
   }, 'Cache.add called with non-HTTP/HTTPS URL');
 
 cache_test(function(cache) {
-    var request = new Request('../resources/simple.txt', {method: 'POST', body: 'Hello'});
+    var request = new Request('../resources/simple.txt');
     return cache.add(request)
       .then(function(result) {
           assert_equals(result, undefined,
@@ -36,28 +36,18 @@ cache_test(function(cache) {
   }, 'Cache.add called with Request object');
 
 cache_test(function(cache) {
-    var request = new Request('../resources/simple.txt', {method: 'POST', body: 'Hello'});
-    return request.text()
-      .then(function() {
-          assert_false(request.bodyUsed);
-        })
-      .then(function() {
-          return cache.add(request);
-        });
-  }, 'Cache.add called with Request object with a used body');
-
-cache_test(function(cache) {
-    var request = new Request('../resources/simple.txt', {method: 'POST', body: 'Hello'});
+    var request = new Request('../resources/simple.txt');
     return cache.add(request)
       .then(function(result) {
           assert_equals(result, undefined,
                         'Cache.add should resolve with undefined on success.');
         })
       .then(function() {
-          return assert_promise_rejects(
-            cache.add(request),
-            new TypeError(),
-            'Cache.add should throw TypeError if same request is added twice.');
+          return cache.add(request);
+        })
+      .then(function(result) {
+          assert_equals(result, undefined,
+                        'Cache.add should resolve with undefined on success.');
         });
   }, 'Cache.add called twice with the same Request object');
 
@@ -137,8 +127,8 @@ cache_test(function(cache) {
     var request = new Request('../resources/simple.txt');
     return assert_promise_rejects(
       cache.addAll([request, request]),
-      new TypeError(),
-      'Cache.addAll should throw TypeError if the same request is added ' +
+      'InvalidStateError',
+      'Cache.addAll should throw InvalidStateError if the same request is added ' +
       'twice.');
   }, 'Cache.addAll called with the same Request object specified twice');
 
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-delete.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-delete.js
index 36ca8473164c..75a474c2b2c9 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-delete.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-delete.js
@@ -43,8 +43,8 @@ cache_test(function(cache) {
   }, 'Cache.delete called with a string URL');
 
 cache_test(function(cache) {
-    var request = new Request(test_url, { method: 'POST', body: 'Abc' });
-    return cache.put(request.clone(), new_test_response())
+    var request = new Request(test_url);
+    return cache.put(request, new_test_response())
       .then(function() {
           return cache.delete(request);
         })
@@ -52,33 +52,9 @@ cache_test(function(cache) {
           assert_true(result,
                       'Cache.delete should resolve with "true" if an entry ' +
                       'was successfully deleted.');
-          assert_false(request.bodyUsed,
-                       'Cache.delete should not consume request body.');
         });
   }, 'Cache.delete called with a Request object');
 
-cache_test(function(cache) {
-    var request = new Request(test_url, { method: 'POST', body: 'Abc' });
-    return cache.put(request.clone(), new_test_response())
-      .then(function() {
-          return request.text();
-        })
-      .then(function() {
-          assert_true(request.bodyUsed,
-                      '[https://fetch.spec.whatwg.org/#body-mixin] ' +
-                      'Request.bodyUsed should be true after text() method ' +
-                      'resolves.');
-        })
-      .then(function() {
-          return cache.delete(request);
-        })
-      .then(function(result) {
-          assert_true(result,
-                      'Cache.delete should resolve with "true" if an entry ' +
-                      'was successfully deleted.');
-        });
-  }, 'Cache.delete with a Request object containing used body');
-
 cache_test(function(cache) {
     return cache.delete(test_url)
       .then(function(result) {
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-match.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-match.js
index 4a027b6f1653..8d3e5ee68599 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-match.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-match.js
@@ -103,14 +103,6 @@ var vary_entries = [
     request: new Request('http://example.com/c'),
     response: new Response('',
                            {headers: {'Vary': 'Cookies'}})
-  },
-
-  {
-    name: 'vary_wildcard',
-    request: new Request('http://example.com/c',
-                         {headers: {'Cookies': 'x', 'X-Key': '1'}}),
-    response: new Response('',
-                           {headers: {'Vary': '*'}})
   }
 ];
 
@@ -181,32 +173,6 @@ prepopulated_cache_test(simple_entries, function(cache, entries) {
         });
   }, 'Cache.match with new Request');
 
-cache_test(function(cache) {
-    var request = new Request('https://example.com/foo', {
-        method: 'POST',
-        body: 'Hello world!'
-      });
-    var response = new Response('Booyah!', {
-        status: 200,
-        headers: {'Content-Type': 'text/plain'}
-      });
-
-    return cache.put(request.clone(), response.clone())
-      .then(function() {
-          assert_false(
-            request.bodyUsed,
-            '[https://fetch.spec.whatwg.org/#concept-body-used-flag] ' +
-            'Request.bodyUsed flag should be initially false.');
-        })
-      .then(function() {
-          return cache.match(request);
-        })
-      .then(function(result) {
-          assert_false(request.bodyUsed,
-                       'Cache.match should not consume Request body.');
-        });
-  }, 'Cache.match with Request containing non-empty body');
-
 prepopulated_cache_test(simple_entries, function(cache, entries) {
     return cache.matchAll(entries.a.request,
                           {ignoreSearch: true})
@@ -337,7 +303,6 @@ prepopulated_cache_test(vary_entries, function(cache, entries) {
           assert_array_equivalent(
             result,
             [
-              entries.vary_wildcard.response,
               entries.vary_cookie_absent.response
             ],
             'Cache.matchAll should exclude matches if a vary header is ' +
@@ -354,7 +319,6 @@ prepopulated_cache_test(vary_entries, function(cache, entries) {
           assert_array_equivalent(
             result,
             [
-              entries.vary_wildcard.response
             ],
             'Cache.matchAll should exclude matches if a vary header is ' +
             'missing in the cached request, but is present in the query ' +
@@ -381,7 +345,6 @@ prepopulated_cache_test(vary_entries, function(cache, entries) {
           assert_object_in_array(
             result,
             [
-              entries.vary_wildcard.response,
               entries.vary_cookie_absent.response
             ],
             'Cache.match should honor "Vary" header.');
@@ -398,7 +361,6 @@ prepopulated_cache_test(vary_entries, function(cache, entries) {
               entries.vary_cookie_is_cookie.response,
               entries.vary_cookie_is_good.response,
               entries.vary_cookie_absent.response,
-              entries.vary_wildcard.response
             ],
             'Cache.matchAll should honor "ignoreVary" parameter.');
         });
@@ -464,6 +426,15 @@ cache_test(function(cache) {
         });
   }, 'Cache.match invoked multiple times for the same Request/Response');
 
+prepopulated_cache_test(simple_entries, function(cache, entries) {
+    var request = new Request(entries.a.request, { method: 'POST' });
+    return cache.match(request)
+      .then(function(result) {
+          assert_equals(result, undefined,
+                        'Cache.match should not find a match');
+        });
+  }, 'Cache.match with POST Request');
+
 // Helpers ---
 
 // Run |test_function| with a Cache object as its only parameter. Prior to the
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js
index ec1617f04e9a..eeedf80eb4b5 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js
@@ -67,29 +67,6 @@ cache_test(function(cache) {
       });
   }, 'Cache.put with Response without a body');
 
-cache_test(function(cache) {
-    var request = new Request(test_url, {
-        method: 'POST',
-        body: 'Hello'
-      });
-    var response = new Response(test_body);
-    assert_false(request.bodyUsed,
-                 '[https://fetch.spec.whatwg.org/#dom-body-bodyused] ' +
-                 'Request.bodyUsed should be initially false.');
-    return cache.put(request, response.clone())
-      .then(function() {
-          assert_true(request.bodyUsed,
-                       'Cache.put should consume Request body.');
-        })
-      .then(function() {
-          return cache.match(request);
-        })
-      .then(function(result) {
-          assert_object_equals(result, response,
-                               'Cache.put should store response body.');
-        });
-  }, 'Cache.put with Request containing a body');
-
 cache_test(function(cache) {
     var request = new Request(test_url);
     var response = new Response(test_body);
@@ -294,18 +271,11 @@ cache_test(function(cache) {
 
 cache_test(function(cache) {
     var request = new Request(test_url, {method: 'POST', body: test_body});
-    assert_false(request.bodyUsed,
-                 '[https://fetch.spec.whatwg.org/#dom-body-bodyused] ' +
-                 'Request.bodyUsed should be initially false.');
-    var copy = new Request(request);
-    assert_true(request.bodyUsed,
-                '[https://fetch.spec.whatwg.org/#dom-request] ' +
-                'Request constructor should set input\'s used flag.');
     return assert_promise_rejects(
       cache.put(request, new Response(test_body)),
       new TypeError(),
-      'Cache.put should throw a TypeError for a request with used body.');
-  }, 'Cache.put with a used request body');
+      'Cache.put should throw a TypeError for a POST request.');
+  }, 'Cache.put with a POST request');
 
 cache_test(function(cache) {
     var response = new Response(test_body);
@@ -313,12 +283,35 @@ cache_test(function(cache) {
                  '[https://fetch.spec.whatwg.org/#dom-body-bodyused] ' +
                  'Response.bodyUsed should be initially false.');
     return response.text().then(function() {
-      assert_false(
+      assert_true(
         response.bodyUsed,
         '[https://fetch.spec.whatwg.org/#concept-body-consume-body] ' +
-          'The text() method should not set "body passed" flag.');
-      return cache.put(new Request(test_url), response);
-    });
+          'The text() method should set "body used" flag.');
+      return assert_promise_rejects(
+        cache.put(new Request(test_url), response),
+        new TypeError,
+        '[https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#cache-put] ' +
+        'Cache put should reject with TypeError when Response ' +
+        'body is already used.');
+      });
   }, 'Cache.put with a used response body');
 
+cache_test(function(cache) {
+    return assert_promise_rejects(
+      cache.put(new Request(test_url),
+                new Response(test_body, { headers: { VARY: '*' }})),
+      new TypeError(),
+      'Cache.put should reject VARY:* Responses with a TypeError.');
+  }, 'Cache.put with a VARY:* Response');
+
+cache_test(function(cache) {
+    return assert_promise_rejects(
+      cache.put(new Request(test_url),
+                new Response(test_body,
+                             { headers: { VARY: 'Accept-Language,*' }})),
+      new TypeError(),
+      'Cache.put should reject Responses with an embedded VARY:* with a ' +
+      'TypeError.');
+  }, 'Cache.put with an embedded VARY:* Response');
+
 done();
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage-match.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage-match.js
index 06b2888e891c..0de85146a6a7 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage-match.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage-match.js
@@ -111,8 +111,11 @@ promise_test(function(test) {
           return self.caches.match(transaction.request, {cacheName: 'foo'});
         })
       .then(function(response) {
-          assert_equals(response, undefined,
-                        'The response should not be found.');
+          assert_unreached('The match with bad cache name should reject.');
+        })
+      .catch(function(err) {
+          assert_equals(err.name, 'NotFoundError',
+                        'The match should reject with NotFoundError.');
           return self.caches.has('foo');
         })
       .then(function(has_foo) {
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage.js
index cb8e0483b221..a8d4e7e61de4 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-storage.js
@@ -106,6 +106,7 @@ promise_test(function(t) {
 
 promise_test(function(t) {
     var cache_name = 'cache-storage/open';
+    var url = '../resources/simple.txt';
     var cache;
     return self.caches.delete(cache_name)
       .then(function() {
@@ -115,21 +116,26 @@ promise_test(function(t) {
           cache = result;
         })
       .then(function() {
-          return self.caches.open(cache_name);
-        })
-      .then(function(result) {
-          assert_equals(result, cache,
-                        'CacheStorage.open should return the named Cache ' +
-                        'object if it exists.');
+          return cache.add('../resources/simple.txt');
         })
       .then(function() {
           return self.caches.open(cache_name);
         })
       .then(function(result) {
-          assert_equals(result, cache,
-                        'CacheStorage.open should return the same ' +
-                        'instance of an existing Cache object.');
-        });
+          assert_true(result instanceof Cache,
+                      'CacheStorage.open should return a Cache object');
+          assert_not_equals(result, cache,
+                            'CacheStorage.open should return a new Cache ' +
+                            'object each time its called.');
+          return Promise.all([cache.keys(), result.keys()]);
+        })
+      .then(function(results) {
+          var expected_urls = results[0].map(function(r) { return r.url });
+          var actual_urls = results[1].map(function(r) { return r.url });
+          assert_array_equals(actual_urls, expected_urls,
+                              'CacheStorage.open should return a new Cache ' +
+                              'object for the same backing store.');
+        })
   }, 'CacheStorage.open with existing cache');
 
 promise_test(function(t) {
diff --git a/testing/web-platform/tests/service-workers/cache-storage/window/sandboxed-iframes.https.html b/testing/web-platform/tests/service-workers/cache-storage/window/sandboxed-iframes.https.html
index aa8613ec77db..de70db4e1371 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/window/sandboxed-iframes.https.html
+++ b/testing/web-platform/tests/service-workers/cache-storage/window/sandboxed-iframes.https.html
@@ -23,7 +23,7 @@ function wait_for_message(id) {
         self.addEventListener('message', function listener(e) {
             if (e.data.id === id) {
                 resolve(e.data);
-                self.removeEventListener(listener);
+                self.removeEventListener('message', listener);
             }
         });
     });
diff --git a/testing/web-platform/tests/web-animations/animation-timeline/animation-timeline.html b/testing/web-platform/tests/web-animations/animation-timeline/document-timeline.html
similarity index 98%
rename from testing/web-platform/tests/web-animations/animation-timeline/animation-timeline.html
rename to testing/web-platform/tests/web-animations/animation-timeline/document-timeline.html
index edb0c84553ed..e7ab1687a148 100644
--- a/testing/web-platform/tests/web-animations/animation-timeline/animation-timeline.html
+++ b/testing/web-platform/tests/web-animations/animation-timeline/document-timeline.html
@@ -1,6 +1,6 @@
 <!doctype html>
 <meta charset=utf-8>
-<title>Web Animations API: AnimationTimeline tests</title>
+<title>Web Animations API: DocumentTimeline tests</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
diff --git a/testing/web-platform/tests/web-animations/animation-timeline/idlharness.html b/testing/web-platform/tests/web-animations/animation-timeline/idlharness.html
index 440ebb4e0e70..9a489086a171 100644
--- a/testing/web-platform/tests/web-animations/animation-timeline/idlharness.html
+++ b/testing/web-platform/tests/web-animations/animation-timeline/idlharness.html
@@ -1,15 +1,18 @@
 <!doctype html>
 <meta charset=utf-8>
-<title>Web Animations API: AnimationTimeline tests</title>
+<title>Web Animations API: DocumentTimeline tests</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/WebIDLParser.js"></script>
 <script src="/resources/idlharness.js"></script>
 <div id="log"></div>
-<script type="text/plain" id="AnimationTimeline-IDL">
+<script type="text/plain" id="DocumentTimeline-IDL">
 interface AnimationTimeline {
   readonly attribute double? currentTime;
 };
+
+interface DocumentTimeline : AnimationTimeline {
+};
 </script>
 <script>
 'use strict';
@@ -18,8 +21,8 @@ var idlArray;
 test(function() {
   idlArray = new IdlArray();
   idlArray.add_idls(
-    document.getElementById('AnimationTimeline-IDL').textContent);
-  idlArray.add_objects( { AnimationTimeline: ['document.timeline'] } );
+    document.getElementById('DocumentTimeline-IDL').textContent);
+  idlArray.add_objects( { DocumentTimeline: ['document.timeline'] } );
 });
 idlArray.test();
 
diff --git a/testing/web-platform/tests/webstorage/idlharness.html b/testing/web-platform/tests/webstorage/idlharness.html
index 9c82721366dc..094e12616eee 100644
--- a/testing/web-platform/tests/webstorage/idlharness.html
+++ b/testing/web-platform/tests/webstorage/idlharness.html
@@ -30,7 +30,7 @@ interface EventInit {
 interface Storage {
   readonly attribute unsigned long length;
   DOMString? key(unsigned long index);
-  getter DOMString getItem(DOMString key);
+  getter DOMString? getItem(DOMString key);
   setter creator void setItem(DOMString key, DOMString value);
   deleter void removeItem(DOMString key);
   void clear();
@@ -47,7 +47,7 @@ interface WindowLocalStorage {
 Window implements WindowLocalStorage;
 [Constructor(DOMString type, optional StorageEventInit eventInitDict)]
 interface StorageEvent : Event {
-  readonly attribute DOMString key;
+  readonly attribute DOMString? key;
   readonly attribute DOMString? oldValue;
   readonly attribute DOMString? newValue;
   readonly attribute DOMString url;
@@ -55,7 +55,7 @@ interface StorageEvent : Event {
 };
 
 dictionary StorageEventInit : EventInit {
-  DOMString key;
+  DOMString? key;
   DOMString? oldValue;
   DOMString? newValue;
   DOMString url;
diff --git a/testing/web-platform/tests/workers/Worker_terminate_event_queue.htm b/testing/web-platform/tests/workers/Worker_terminate_event_queue.htm
index cbb6bdae5783..5d9472a1c46f 100644
--- a/testing/web-platform/tests/workers/Worker_terminate_event_queue.htm
+++ b/testing/web-platform/tests/workers/Worker_terminate_event_queue.htm
@@ -4,19 +4,19 @@
 <script src="/resources/testharnessreport.js"></script>
 <div id=log></div>
 <script>
-async_test(function(t) {
+async_test(function() {
   var testResult;
   var worker = new Worker('./support/WorkerTerminate.js');
-  worker.onmessage = function(e) {
+  worker.onmessage = this.step_func(function(e) {
     testResult = e.data;
     if (testResult >= 10000) {
       worker.terminate();
-      worker.onmessage = t.unreached_func('Unexpected message event');
-      setTimeout(t.step_func_done(function() {
+      worker.onmessage = this.unreached_func('Unexpected message event');
+      setTimeout(this.step_func_done(function() {
         assert_equals(testResult, 10000);
       }), 100);
     }
-  };
+  });
   worker.postMessage("ping");
 });
 </script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html
index 767693da02e3..d65695632bc1 100644
--- a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html
@@ -12,23 +12,15 @@ close();
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
-async_test(function() {
-  var gotMessage = false;
-  var gotError = false;
-  var worker = new Worker('#');
-  worker.onmessage = function(e) {
-    gotMessage = true;
-  };
-  worker.onerror = function(e) {
-    gotError = true;
-  };
-  worker.postMessage(1);
-  setTimeout(this.step_func(function() {
-    assert_false(gotMessage, 'got message');
-    assert_true(gotError, 'got error');
-    this.done();
-  }), 500);
-});
+var worker = new Worker('#');
+worker.onmessage = function(e) {
+  assert_unreached("Got message");
+};
+worker.onerror = function(e) {
+  assert_unreached("Got error");
+};
+worker.postMessage(1);
+setTimeout(done, 2000);
 </script>
 <!--
 */
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html
index cd7130785a90..1d7d178d22ec 100644
--- a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html
@@ -18,22 +18,14 @@ var interval2 = setInterval(function() {
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
-async_test(function() {
-  var gotMessage = false;
-  var gotError = false;
-  var worker = new Worker('#');
-  worker.onmessage = function(e) {
-    gotMessage = true;
-  };
-  worker.onerror = function(e) {
-    gotError = true;
-  };
-  setTimeout(this.step_func(function() {
-    assert_false(gotMessage, 'got message');
-    assert_true(gotError, 'got error');
-    this.done();
-  }), 500);
-});
+var worker = new Worker('#');
+worker.onmessage = function(e) {
+  assert_unreached("Got message");
+};
+worker.onerror = function(e) {
+  assert_unreached("Got error");
+};
+setTimeout(done, 2000);
 </script>
 <!--
 */
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html
index 19686650aa5b..c2fa10dfc978 100644
--- a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html
@@ -14,27 +14,15 @@ setTimeout(x, 0);
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
-setup({allow_uncaught_exception: true});
-
-async_test(function() {
-  var gotMessage = false;
-  var gotError = false;
-  var worker = new Worker('#');
-  worker.onmessage = function(e) {
-    gotMessage = true;
-  };
-  worker.onerror = function(e) {
-    gotError = true;
-  };
-  setTimeout(this.step_func(function() {
-    assert_false(gotMessage, 'got message');
-    assert_true(gotError, 'got error');
-    this.done();
-  }), 500);
-});
+var worker = new Worker('#');
+worker.onmessage = function(e) {
+  assert_unreached("Got message");
+};
+worker.onerror = function(e) {
+  assert_unreached("Got error");
+};
+setTimeout(done, 2000);
 </script>
 <!--
 */
 //-->
-
-
diff --git a/testing/web-platform/tests/workers/support/WorkerTerminate.js b/testing/web-platform/tests/workers/support/WorkerTerminate.js
index 03e028746da6..7c99e7ec5605 100644
--- a/testing/web-platform/tests/workers/support/WorkerTerminate.js
+++ b/testing/web-platform/tests/workers/support/WorkerTerminate.js
@@ -2,9 +2,9 @@ onmessage = function(evt)
 {
     for (var i=0; true; i++)
     {
-        if (i%1000 == 1)
+        if (i%1000 == 0)
         {
             postMessage(i);
         }
     }
-}
\ No newline at end of file
+}