Bug 1460033 [wpt PR 10905] - Fix resource-timing.https.html test, a=testonly

Automatic update from web-platform-testsFix resource-timing.https.html test

This CL changes resource-timing-worker.js to use a generated response.
This means Chrome no longer passes the test.

Change-Id: Ib983e4fba9e81ddbee7f9572b6a06b3c1825577a
Reviewed-on: https://chromium-review.googlesource.com/1050383
Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
Reviewed-by: Timothy Dresser <tdresser@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556964}

--

wpt-commits: d73901a036e17890987c1593fcaf090d03c3fb66
wpt-pr: 10905

testing/web-platform/meta/MANIFEST.json

@@ -604188,7 +604188,7 @@
    "support"
   ],
   "service-workers/service-worker/resources/resource-timing-worker.js": [
-   "2a47775874086c1cdff257e3243af1af0b5e84be",
+   "04a965dc0324c035bb3331e546d9bb43230d5eac",
    "support"
   ],
   "service-workers/service-worker/resources/respond-then-throw-worker.js": [

testing/web-platform/tests/service-workers/service-worker/resources/resource-timing-worker.js

@@ -1,5 +1,9 @@
 self.addEventListener('fetch', function(event) {
-    if (event.request.url.indexOf('dummy.js') != -1) {
-      event.respondWith(fetch('empty.js'));
-    }
-  });
+  if (event.request.url.indexOf('dummy.js') != -1) {
+    event.respondWith(new Promise(resolve => {
+      // Slightly delay the response so we ensure we get a non-zero
+      // duration.
+      setTimeout(_ => resolve(new Response('// Empty javascript')), 50);
+    }));
+  }
+});