[DevTools] Extract platform module.

Source/devtools/front_end/main/AdvancedApp.js

 // Copyright 2014 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.
 
 /**
  * @constructor
  * @extends {WebInspector.App}
- * @implements {WebInspector.ToolboxHost}
  */
 WebInspector.AdvancedApp = function()
 {
     WebInspector.App.call(this);
     if (WebInspector.overridesSupport.responsiveDesignAvailable()) {
         this._toggleEmulationButton = new WebInspector.StatusBarButton(WebInspector.UIString("Toggle device mode."), "emulation-status-bar-item");
         this._toggleEmulationButton.toggled = WebInspector.overridesSupport.emulationEnabled();
         this._toggleEmulationButton.addEventListener("click", this._toggleEmulationEnabled, this);
         WebInspector.overridesSupport.addEventListener(WebInspector.OverridesSupport.Events.EmulationStateChanged, this._emulationEnabledChanged, this);
         WebInspector.overridesSupport.addEventListener(WebInspector.OverridesSupport.Events.OverridesWarningUpdated, this._overridesWarningUpdated, this);
@@ skipping 67 matching lines @@
 
         if (this._toolboxWindow)
             return;
 
         var url = window.location.href.replace("devtools.html", "toolbox.html");
         this._toolboxWindow = window.open(url, undefined);
     },
 
     /**
      * @param {!Document} toolboxDocument
-     * @override
      */
     toolboxLoaded: function(toolboxDocument)
     {
         WebInspector.initializeUIUtils(toolboxDocument.defaultView);
         WebInspector.installComponentRootStyles(/** @type {!Element} */ (toolboxDocument.body));
         WebInspector.ContextMenu.installHandler(toolboxDocument);
 
         var rootView = new WebInspector.RootView();
         var inspectedPagePlaceholder = new WebInspector.InspectedPagePlaceholder();
         inspectedPagePlaceholder.addEventListener(WebInspector.InspectedPagePlaceholder.Events.Update, this._onSetInspectedPageBounds.bind(this, true));
@@ skipping 188 matching lines @@
     handleAction: function()
     {
         if (!WebInspector.overridesSupport.responsiveDesignAvailable())
             return false;
         if (!(WebInspector.app instanceof WebInspector.AdvancedApp))
             return false;
         WebInspector.app._toggleEmulationEnabled();
         return true;
     }
 }