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

ash/wm/window_state_observer.h

Index: ash/wm/window_state_observer.h
diff --git a/ash/common/wm/window_state_observer.h b/ash/wm/window_state_observer.h
similarity index 88%
rename from ash/common/wm/window_state_observer.h
rename to ash/wm/window_state_observer.h
index 7bfec4e1ad9346bf808f261020c3fdf95e93338d..e18cb32c28f57b5af0a9f3ddabb663f35ce1f6eb 100644
--- a/ash/common/wm/window_state_observer.h
+++ b/ash/wm/window_state_observer.h
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_COMMON_WM_WINDOW_STATE_OBSERVER_H_
-#define ASH_COMMON_WM_WINDOW_STATE_OBSERVER_H_
+#ifndef ASH_WM_WINDOW_STATE_OBSERVER_H_
+#define ASH_WM_WINDOW_STATE_OBSERVER_H_
 
 #include "ash/ash_export.h"
-#include "ash/common/wm/wm_types.h"
+#include "ash/wm/wm_types.h"
 
 namespace ash {
 namespace wm {
@@ -39,4 +39,4 @@ class ASH_EXPORT WindowStateObserver {
 }  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_COMMON_WM_WINDOW_STATE_OBSERVER_H_
+#endif  // ASH_WM_WINDOW_STATE_OBSERVER_H_