Enable tests related to the extensions web ui that were flaky.

chrome/test/data/webui/test_api.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Library providing basic test framework functionality.
  */
 
 /**
  * Namespace for |Test|.
@@ skipping 26 matching lines @@
 
  /**
    * This class will be exported as testing.Test, and is provided to hold the
    * fixture's configuration and callback methods for the various phases of
    * invoking a test. It is called "Test" rather than TestFixture to roughly
    * mimic the gtest's class names.
    * @constructor
    */
   function Test() {};
 
+  /**
+   * Make all transitions and animations take 0ms.
+   * Any animations will still happen and webkitAnimationEnd should be
+   * listened to.

[Dan Beam, 2015/04/30 23:22:04]

Make all transitions and animations take 0ms. NOTE: this will completely disable
webkitTransitionEnd events. If your code relies on them firing, it will break.
webkitAnimationEnd events should still work.

[hcarmona, 2015/05/01 16:51:31]

Done.

+   * Transitions will not dispatch any webkitTransitionEnd events.
+   */
+  Test.disableAnimationsAndTransitions = function() {
+    var noAnimationStyle = document.createElement('style');
+    noAnimationStyle.id = 'no-animation';
+    noAnimationStyle.textContent =
+      '* {' +
+      '  -webkit-transition-duration: 0ms !important;' +
+      '  -webkit-transition-delay: 0ms !important;' +
+      '  -webkit-animation-duration: 0ms !important;' +
+      '  -webkit-animation-delay: 0ms !important;' +
+      '}';
+    document.querySelector('head').appendChild(noAnimationStyle);
+  };
+
   Test.prototype = {
     /**
      * The name of the test.
      */
     name: null,
 
     /**
      * When set to a string value representing a url, generate BrowsePreload
      * call, which will browse to the url and call fixture.preLoad of the
      * currentTestCase.
@@ skipping 242 matching lines @@
       }
     },
 
     /**
      * Override this method to perform tasks after running your test. If you
      * create a mock class, you must call Mock4JS.verifyAllMocks() in this
      * phase.
      * @type {Function}
      */
     tearDown: function() {
+      var noAnimationStyle = $('no-animation');
+      if (noAnimationStyle)
+        noAnimationStyle.parentNode.removeChild(noAnimationStyle);
+
       Mock4JS.verifyAllMocks();
     },
 
     /**
      * Called to run the body from the perspective of this fixture.
      * @type {Function}
      */
     runTest: function(testBody) {
       testBody.call(this);
     },
@@ skipping 1486 matching lines @@
   exports.TEST = TEST;
   exports.TEST_F = TEST_F;
   exports.RUNTIME_TEST_F = TEST_F;
   exports.GEN = GEN;
   exports.GEN_INCLUDE = GEN_INCLUDE;
   exports.WhenTestDone = WhenTestDone;
 
   // Import the Mock4JS helpers.
   Mock4JS.addMockSupport(exports);
 })(this);