Fix references to ui/gfx headers in a*/.

ash/display/mirror_window_controller.h

 // Copyright (c) 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_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_
 #define ASH_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/window_tree_host_observer.h"
+#include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/size.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class Reflector;
 }
 
 namespace ash {
@@ skipping 41 matching lines @@
   scoped_ptr<AshWindowTreeHost> ash_host_;
   gfx::Size mirror_window_host_size_;
   scoped_refptr<ui::Reflector> reflector_;
 
   DISALLOW_COPY_AND_ASSIGN(MirrorWindowController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_