mash: Migrate shelf menus to wm common types

ash/shell_delegate.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_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 34 matching lines @@
 class AccessibilityDelegate;
 class ContainerDelegate;
 class MediaDelegate;
 class NewWindowDelegate;
 class PointerWatcherDelegate;
 class SessionStateDelegate;
 class ShelfDelegate;
 class ShelfModel;
 class SystemTrayDelegate;
 class UserWallpaperDelegate;
-class Shelf;
 struct ShelfItem;
+class WmShelf;
 
 class ASH_EXPORT VirtualKeyboardStateObserver {
  public:
   // Called when keyboard is activated/deactivated.
   virtual void OnVirtualKeyboardStateChanged(bool activated) {}
 
  protected:
   virtual ~VirtualKeyboardStateObserver() {}
 };
 
@@ skipping 76 matching lines @@
   virtual NewWindowDelegate* CreateNewWindowDelegate() = 0;
 
   // Creates a media delegate. Shell takes ownership of the delegate.
   virtual MediaDelegate* CreateMediaDelegate() = 0;
 
   virtual std::unique_ptr<PointerWatcherDelegate>
   CreatePointerWatcherDelegate() = 0;
 
   virtual std::unique_ptr<ContainerDelegate> CreateContainerDelegate() = 0;
 
-  // Creates a menu model for the |shelf| and optional shelf |item|.
+  // Creates a menu model for the |wm_shelf| and optional shelf |item|.
   // If |item| is null, this creates a context menu for the desktop or shelf.
-  virtual ui::MenuModel* CreateContextMenu(ash::Shelf* shelf,
-                                           const ash::ShelfItem* item) = 0;
+  virtual ui::MenuModel* CreateContextMenu(WmShelf* wm_shelf,
+                                           const ShelfItem* item) = 0;
 
   // Creates a GPU support object. Shell takes ownership of the object.
   virtual GPUSupport* CreateGPUSupport() = 0;
 
   // Get the product name.
   virtual base::string16 GetProductName() const = 0;
 
   virtual void OpenKeyboardShortcutHelpPage() const {}
 
   virtual gfx::Image GetDeprecatedAcceleratorImage() const = 0;
 
   // Toggles the status of the touchpad / touchscreen on or off.
   virtual void ToggleTouchpad() {}
   virtual void ToggleTouchscreen() {}
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_