Shuffles and renames ash/common/wm classes

ash/common/wm_overview_mode_observer.h

Index: ash/common/wm_overview_mode_observer.h
diff --git a/ash/common/wm/wm_overview_mode_observer.h b/ash/common/wm_overview_mode_observer.h
similarity index 67%
rename from ash/common/wm/wm_overview_mode_observer.h
rename to ash/common/wm_overview_mode_observer.h
index b7ae9c4095385ca78eed5bf5461d21365b534eb2..95832b2e03f75b52c6c3ca6a8df466e573563373 100644
--- a/ash/common/wm/wm_overview_mode_observer.h
+++ b/ash/common/wm_overview_mode_observer.h
@@ -2,13 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_COMMON_WM_WM_OVERVIEW_MODE_OBSERVER_H_
-#define ASH_COMMON_WM_WM_OVERVIEW_MODE_OBSERVER_H_
+#ifndef ASH_COMMON_WM_OVERVIEW_MODE_OBSERVER_H_
+#define ASH_COMMON_WM_OVERVIEW_MODE_OBSERVER_H_
 
 #include "ash/ash_export.h"
 
 namespace ash {
-namespace wm {
 
 class WmWindow;
 
@@ -20,7 +19,6 @@ class ASH_EXPORT WmOverviewModeObserver {
   virtual ~WmOverviewModeObserver() {}
 };
 
-}  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_COMMON_WM_WM_OVERVIEW_MODE_OBSERVER_H_
+#endif  // ASH_COMMON_WM_OVERVIEW_MODE_OBSERVER_H_