mash: Port mojo:ash_sysui's ContextMenuMus to mojo:ash.

ash/sysui/wallpaper_delegate_mus.h

 // Copyright 2016 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_SYSUI_USER_WALLPAPER_DELEGATE_MUS_H_
-#define ASH_SYSUI_USER_WALLPAPER_DELEGATE_MUS_H_
+#ifndef ASH_SYSUI_WALLPAPER_DELEGATE_MUS_H_
+#define ASH_SYSUI_WALLPAPER_DELEGATE_MUS_H_
 
-#include "ash/desktop_background/user_wallpaper_delegate.h"
+#include "ash/common/wallpaper/wallpaper_delegate.h"
 #include "ash/public/interfaces/wallpaper.mojom.h"
 #include "base/macros.h"
 
 namespace ash {
 namespace sysui {
 
-class UserWallpaperDelegateMus : public UserWallpaperDelegate,
-                                 public mojom::WallpaperController {
+class WallpaperDelegateMus : public WallpaperDelegate,
+                             public mojom::WallpaperController {
  public:
-  UserWallpaperDelegateMus();
-  ~UserWallpaperDelegateMus() override;
+  WallpaperDelegateMus();
+  ~WallpaperDelegateMus() override;
 
  private:
-  // UserWallpaperDelegate overrides:
+  // WallpaperDelegate overrides:
   int GetAnimationType() override;
   int GetAnimationDurationOverride() override;
   void SetAnimationDurationOverride(int animation_duration_in_ms) override;
   bool ShouldShowInitialAnimation() override;
   void UpdateWallpaper(bool clear_cache) override;
   void InitializeWallpaper() override;
   void OpenSetWallpaperPage() override;
   bool CanOpenSetWallpaperPage() override;
   void OnWallpaperAnimationFinished() override;
   void OnWallpaperBootAnimationFinished() override;
 
   // mojom::WallpaperController overrides:
   void SetWallpaper(const SkBitmap& wallpaper,
                     mojom::WallpaperLayout layout) override;
 
-  DISALLOW_COPY_AND_ASSIGN(UserWallpaperDelegateMus);
+  DISALLOW_COPY_AND_ASSIGN(WallpaperDelegateMus);
 };
 
 }  // namespace sysui
 }  // namespace ash
 
-#endif  // ASH_SYSUI_USER_WALLPAPER_DELEGATE_MUS_H_
+#endif  // ASH_SYSUI_WALLPAPER_DELEGATE_MUS_H_