Moves ash/wm/common back into ash

ash/wm/common/window_state_delegate.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_COMMON_WINDOW_STATE_DELEGATE_H_
 #define ASH_WM_COMMON_WINDOW_STATE_DELEGATE_H_
 
-#include "ash/wm/common/ash_wm_common_export.h"
+#include "ash/ash_export.h"
 #include "base/macros.h"
 
 namespace ash {
 namespace wm {
 class WindowState;
 
-class ASH_WM_COMMON_EXPORT WindowStateDelegate {
+class ASH_EXPORT WindowStateDelegate {
  public:
   WindowStateDelegate();
   virtual ~WindowStateDelegate();
 
   // Invoked when the user uses Shift+F4/F4 to toggle the window fullscreen
   // state. If the window is not fullscreen and the window supports immersive
   // fullscreen ToggleFullscreen() should put the window into immersive
   // fullscreen instead of the default fullscreen type. The caller
   // (ash::wm::WindowState) falls backs to the default implementation if this
   // returns false.
   virtual bool ToggleFullscreen(WindowState* window_state);
 
   // Invoked when workspace fullscreen state changes and a window may need to
   // reassert its always on top state. Returns true if delegate has handled this
   // and no additional work is needed, false otherwise.
   virtual bool RestoreAlwaysOnTop(WindowState* window_state);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WindowStateDelegate);
 };
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_COMMON_WINDOW_STATE_DELEGATE_H_