Add managed user avatar menu for mac.

chrome/browser/ui/cocoa/browser/avatar_menu_bubble_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_BROWSER_AVATAR_MENU_BUBBLE_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_AVATAR_MENU_BUBBLE_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 #import "ui/base/cocoa/tracking_area.h"
 
 class AvatarMenuModel;
 class Browser;
 
 // This window controller manages the bubble that displays a "menu" of profiles.
 // It is brought open by clicking on the avatar icon in the window frame.
 @interface AvatarMenuBubbleController : BaseBubbleController {
  @private
   // The model that contains the data from the backend.
   scoped_ptr<AvatarMenuModel> model_;
 
   // Array of the below view controllers.
   scoped_nsobject<NSMutableArray> items_;
+
+  // Is set to true if the managed user has clicked on Switch Users.
+  BOOL expanded_;
 }
 
 // Designated initializer. The browser is passed to the model for profile
 // information.
 - (id)initWithBrowser:(Browser*)parentBrowser
            anchoredAt:(NSPoint)point;
 
-// Creats a new profile.
+// Creates a new profile.
 - (IBAction)newProfile:(id)sender;
 
 // Switches to a given profile. |sender| is an AvatarMenuItemController.
 - (IBAction)switchToProfile:(id)sender;
 
 // Edits a given profile. |sender| is an AvatarMenuItemController.
 - (IBAction)editProfile:(id)sender;
 
 @end
 
@@ skipping 80 matching lines @@
          anchoredAt:(NSPoint)point;
 - (void)performLayout;
 - (NSMutableArray*)items;
 @end
 
 @interface AvatarMenuItemController (ExposedForTesting)
 - (void)willStartAnimation:(NSAnimation*)animation;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_AVATAR_MENU_BUBBLE_CONTROLLER_H_