chromeos: Move files in //ash/common to //ash, part 2

ash/wm/screen_dimmer.h

Index: ash/wm/screen_dimmer.h
diff --git a/ash/common/wm/screen_dimmer.h b/ash/wm/screen_dimmer.h
similarity index 92%
rename from ash/common/wm/screen_dimmer.h
rename to ash/wm/screen_dimmer.h
index 1667b057553fe948bea4712cb21d519e7f52ed6b..b51eb5317fe8329a31c0189e6584b1f58c730da7 100644
--- a/ash/common/wm/screen_dimmer.h
+++ b/ash/wm/screen_dimmer.h
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_COMMON_WM_SCREEN_DIMMER_H_
-#define ASH_COMMON_WM_SCREEN_DIMMER_H_
+#ifndef ASH_WM_SCREEN_DIMMER_H_
+#define ASH_WM_SCREEN_DIMMER_H_
 
 #include <memory>
 #include <vector>
 
 #include "ash/ash_export.h"
-#include "ash/common/shell_observer.h"
+#include "ash/shell_observer.h"
 #include "base/macros.h"
 
 namespace ash {
@@ -77,4 +77,4 @@ class ASH_EXPORT ScreenDimmer : public ShellObserver {
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_WM_SCREEN_DIMMER_H_
+#endif  // ASH_WM_SCREEN_DIMMER_H_