Revert "chromeos: Move files in //ash/common to //ash, part 3"

ash/common/wallpaper/wallpaper_delegate.h

Index: ash/common/wallpaper/wallpaper_delegate.h
diff --git a/ash/wallpaper/wallpaper_delegate.h b/ash/common/wallpaper/wallpaper_delegate.h
similarity index 92%
rename from ash/wallpaper/wallpaper_delegate.h
rename to ash/common/wallpaper/wallpaper_delegate.h
index 0ec8ac8408d6a2d6a7011fede0806ddf40ce9f0e..4f435746176af0428fbf8179b1b6eae37d9cfbd8 100644
--- a/ash/wallpaper/wallpaper_delegate.h
+++ b/ash/common/wallpaper/wallpaper_delegate.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_WALLPAPER_WALLPAPER_DELEGATE_H_
-#define ASH_WALLPAPER_WALLPAPER_DELEGATE_H_
+#ifndef ASH_COMMON_WALLPAPER_WALLPAPER_DELEGATE_H_
+#define ASH_COMMON_WALLPAPER_WALLPAPER_DELEGATE_H_
 
 #include "ash/ash_export.h"
 
@@ -53,4 +53,4 @@ class ASH_EXPORT WallpaperDelegate {
 
 }  // namespace ash
 
-#endif  // ASH_WALLPAPER_WALLPAPER_DELEGATE_H_
+#endif  // ASH_COMMON_WALLPAPER_WALLPAPER_DELEGATE_H_