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

ash/common/wallpaper/wallpaper_widget_controller.h

Index: ash/common/wallpaper/wallpaper_widget_controller.h
diff --git a/ash/wallpaper/wallpaper_widget_controller.h b/ash/common/wallpaper/wallpaper_widget_controller.h
similarity index 95%
rename from ash/wallpaper/wallpaper_widget_controller.h
rename to ash/common/wallpaper/wallpaper_widget_controller.h
index a1a61a3076150e672e2499e64714772666d903f6..f0c33788374c7134ad6eb6dbcd46cc37e3971c3b 100644
--- a/ash/wallpaper/wallpaper_widget_controller.h
+++ b/ash/common/wallpaper/wallpaper_widget_controller.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_WIDGET_CONTROLLER_H_
-#define ASH_WALLPAPER_WALLPAPER_WIDGET_CONTROLLER_H_
+#ifndef ASH_COMMON_WALLPAPER_WALLPAPER_WIDGET_CONTROLLER_H_
+#define ASH_COMMON_WALLPAPER_WALLPAPER_WIDGET_CONTROLLER_H_
 
 #include <memory>
 
@@ -98,4 +98,4 @@ class ASH_EXPORT AnimatingWallpaperWidgetController {
 
 }  // namespace ash
 
-#endif  // ASH_WALLPAPER_WALLPAPER_WIDGET_CONTROLLER_H_
+#endif  // ASH_COMMON_WALLPAPER_WALLPAPER_WIDGET_CONTROLLER_H_