MD Settings: implement "RESTART" button for hardware acceleration to take effect

chrome/browser/resources/settings/system_page/system_page_delegate.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 Handles interprocess communcation for the system page. */
-
-cr.define('settings', function() {
-  /** @interface */
-  function SystemPageDelegate() {}
-
-  SystemPageDelegate.prototype = {
-    /** Allows the user to change native system proxy settings. */
-    changeProxySettings: assertNotReached,
-  };
-
-  /**
-   * @constructor
-   * @implements {settings.SystemPageDelegate}
-   */
-  function SystemPageDelegateImpl() {}
-
-  SystemPageDelegateImpl.prototype = {
-    /** @override */
-    changeProxySettings: function() {
-      chrome.send('changeProxySettings');
-    },
-  };
-
-  return {
-    SystemPageDelegate: SystemPageDelegate,
-    SystemPageDelegateImpl: SystemPageDelegateImpl,
-  };
-});