ash: Fix shelf auto hide behavior not persisted regression.

ash/launcher/launcher_context_menu.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 ASH_WM_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_
 #define ASH_WM_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_
 #pragma once
 
 #include "ash/ash_export.h"
+#include "ash/wm/shelf_auto_hide_behavior.h"
 #include "base/basictypes.h"
 #include "ui/base/models/simple_menu_model.h"
 
 namespace ash {
 
 // Context menu for the launcher.
 class ASH_EXPORT LauncherContextMenu : public ui::SimpleMenuModel,
                                        public ui::SimpleMenuModel::Delegate {
  public:
   LauncherContextMenu();
   virtual ~LauncherContextMenu();
 
   // Returns true if the auto-hide menu item is checked.
   static bool IsAutoHideMenuHideChecked();
 
-  // Toggles the state of the auto-hide menu item.
-  static void ToggleAutoHideMenu();
+  // Returns the toggled state of the auto-hide behavior.
+  static ShelfAutoHideBehavior GetToggledAutoHideBehavior();
 
   // Returns the resource id for the auto-hide menu.
   static int GetAutoHideResourceStringId();
 
   // ui::SimpleMenuModel::Delegate overrides:
   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
   virtual bool GetAcceleratorForCommandId(
       int command_id,
       ui::Accelerator* accelerator) OVERRIDE;
   virtual void ExecuteCommand(int command_id) OVERRIDE;
 
  private:
   enum MenuItem {
     MENU_AUTO_HIDE,
   };
 
   DISALLOW_COPY_AND_ASSIGN(LauncherContextMenu);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_