AnimationGroup for groups of transitions in Settings

chrome/test/data/webui/settings/animation_browsertest.js

 // Copyright 2016 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 Tests for settings.animation. */
 
 /** @const {string} Path to root from chrome/test/data/webui/settings/. */
 var ROOT_PATH = '../../../../../';
 
 /**
@@ skipping 112 matching lines @@
       var animation = new Animation(div, keyframes, options);
       animation.addEventListener('cancel', onCancelUnexpectedly);
       animation.addEventListener('finish', onFinishBeforePromise);
 
       // TODO(michaelpg): rAF seems more appropriate, but crbug.com/620160.
       setTimeout(function() {
         expectEquals(100, div.clientHeight);
 
         animation.cancel();
 
-        // The promise should resolve before the finish event is scheduled.
+        // The promise should be rejected before the cancel event is scheduled.
         animation.finished.catch(function() {
           expectEquals(0, div.clientHeight);
           animation.removeEventListener('cancel', onCancelUnexpectedly);
           animation.addEventListener('cancel', function() {
             done();
           });
         });
       });
     });
   });
 
   // Run all registered tests.
   mocha.run();
 });