Moves handful of files to ash/wm/common

ash/wm/common/window_state_observer.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_WM_WINDOW_STATE_OBSERVER_H_
-#define ASH_WM_WINDOW_STATE_OBSERVER_H_
+#ifndef ASH_WM_COMMON_WINDOW_STATE_OBSERVER_H_
+#define ASH_WM_COMMON_WINDOW_STATE_OBSERVER_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/common/wm_types.h"
 
 namespace ash {
 namespace wm {
 class WindowState;
 
 class ASH_EXPORT WindowStateObserver {
  public:
@@ skipping 13 matching lines @@
   // Called after the window's state has been updated.
   // This is used to update the shell state that depends on the updated
   // window bounds, such as shelf visibility.
   virtual void OnPostWindowStateTypeChange(WindowState* window_state,
                                            WindowStateType old_type) {}
 };
 
 }  // namespace wm
 }  // namespace ash
 
-#endif  // ASH_WM_WINDOW_STATE_OBSERVER_H_
+#endif  // ASH_WM_COMMON_WINDOW_STATE_OBSERVER_H_