[DevTools] Add toolbox web contents to show in undocked mode.

chrome/browser/ui/cocoa/dev_tools_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_DEV_TOOLS_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_DEV_TOOLS_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
 #include "chrome/browser/devtools/devtools_window.h"
 
 @class FocusTracker;
 @class DevToolsContainerView;
 class Profile;
 
 namespace content {
 class WebContents;
 }
 
 // A class that handles updates of the devTools view within a browser window.
 // It swaps in the relevant devTools contents for a given WebContents or removes
 // the view, if there's no devTools contents to show.
 @interface DevToolsController : NSObject {
  @private
   // A view hosting docked devTools contents.
   base::scoped_nsobject<DevToolsContainerView> devToolsContainerView_;
 
-  // Docked devtools window instance. NULL when current tab is not inspected
+  // Docked devtools web contents. NULL when current tab is not inspected
   // or is inspected with undocked version of DevToolsWindow.
-  DevToolsWindow* devToolsWindow_;
+  content::WebContents* devTools_;
 
   base::scoped_nsobject<FocusTracker> focusTracker_;
 }
 
 - (id)init;
 
 // This controller's view.
 - (NSView*)view;
 
 // Depending on |contents|'s state, decides whether the docked web inspector
 // should be shown or hidden and adjusts inspected page position.
 - (void)updateDevToolsForWebContents:(content::WebContents*)contents
                          withProfile:(Profile*)profile;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_DEV_TOOLS_CONTROLLER_H_