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

ash/common/wallpaper/wallpaper_delegate.h

Index: ash/common/wallpaper/wallpaper_delegate.h
diff --git a/ash/desktop_background/user_wallpaper_delegate.h b/ash/common/wallpaper/wallpaper_delegate.h
similarity index 88%
rename from ash/desktop_background/user_wallpaper_delegate.h
rename to ash/common/wallpaper/wallpaper_delegate.h
index 87ee44ea2441e81c2c07749631a3cb61be0988b9..3dacdb0468d7983c7099b307fe591de8a936b040 100644
--- a/ash/desktop_background/user_wallpaper_delegate.h
+++ b/ash/common/wallpaper/wallpaper_delegate.h
@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_DESKTOP_BACKGROUND_USER_WALLPAPER_DELEGATE_H_
-#define ASH_DESKTOP_BACKGROUND_USER_WALLPAPER_DELEGATE_H_
+#ifndef ASH_COMMON_WALLPAPER_WALLPAPER_DELEGATE_H_
+#define ASH_COMMON_WALLPAPER_WALLPAPER_DELEGATE_H_
 
 #include "ash/ash_export.h"
 
 namespace ash {
 
-class ASH_EXPORT UserWallpaperDelegate {
+class ASH_EXPORT WallpaperDelegate {
  public:
-  virtual ~UserWallpaperDelegate() {}
+  virtual ~WallpaperDelegate() {}
 
   // Returns the type of window animation that should be used when showing the
   // wallpaper.
@@ -56,4 +56,4 @@ class ASH_EXPORT UserWallpaperDelegate {
 
 }  // namespace ash
 
-#endif  // ASH_DESKTOP_BACKGROUND_USER_WALLPAPER_DELEGATE_H_
+#endif  // ASH_COMMON_WALLPAPER_WALLPAPER_DELEGATE_H_