Settings: Implement sub-subpages, and clean up some animations.

chrome/browser/resources/settings/settings_page/settings_animations.js

-// Copyright 2015 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
- * This file defines a set of common animations used by
- * 'settings-animated-pages'.
- */
-Polymer({
-  is: 'next-page-enter-animation',
-
-  behaviors: [
-    Polymer.NeonAnimationBehavior
-  ],
-
-  configure: function(config) {
-    var node = config.node;
-
-    var timing = this.timingFromConfig(config);
-    timing.delay = 150;
-    timing.duration = 150;

[tommycli, 2015/08/12 19:15:19]

Do we are about the specific timing? If we are fine with the default timings
provided by Polymer, we can delete this file. Otherwise, we need to keep it to
use the 150ms timing...

[Dan Beam, 2015/08/12 21:38:04]

we may care.

[tommycli, 2015/08/12 22:11:57]

Okay. I undeleted this file then.

-
-    this._effect = new KeyframeEffect(node, [
-      {'opacity': '0'},
-      {'opacity': '1'}
-    ], timing);
-    return this._effect;
-  }
-});
-
-Polymer({
-  is: 'next-page-exit-animation',
-
-  behaviors: [
-    Polymer.NeonAnimationBehavior
-  ],
-
-  configure: function(config) {
-    var node = config.node;
-
-    var timing = this.timingFromConfig(config);
-    timing.duration = 150;
-
-    this._effect = new KeyframeEffect(node, [
-      {'opacity': '1'},
-      {'opacity': '0'}
-    ], timing);
-    return this._effect;
-  }
-});