Shuffles and renames ash/common/wm classes

ash/common/wm_activation_observer.h

Index: ash/common/wm_activation_observer.h
diff --git a/ash/common/wm/wm_activation_observer.h b/ash/common/wm_activation_observer.h
similarity index 82%
rename from ash/common/wm/wm_activation_observer.h
rename to ash/common/wm_activation_observer.h
index c643d5f76b1f70c6ac55b8acb290b319fbdcba29..b2b9a6ddb2eb517424f0028ef4ce6268443f5ce5 100644
--- a/ash/common/wm/wm_activation_observer.h
+++ b/ash/common/wm_activation_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_ACTIVATION_OBSERVER_H_
-#define ASH_COMMON_WM_WM_ACTIVATION_OBSERVER_H_
+#ifndef ASH_COMMON_WM_ACTIVATION_OBSERVER_H_
+#define ASH_COMMON_WM_ACTIVATION_OBSERVER_H_
 
 #include "ash/ash_export.h"
 
 namespace ash {
-namespace wm {
 
 class WmWindow;
 
@@ -28,7 +27,6 @@ class ASH_EXPORT WmActivationObserver {
   virtual ~WmActivationObserver() {}
 };
 
-}  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_COMMON_WM_WM_ACTIVATION_OBSERVER_H_
+#endif  // ASH_COMMON_WM_ACTIVATION_OBSERVER_H_