Remove #pragma once from ash

ash/rotator/screen_rotation.h

 // Copyright (c) 2012 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_SCREEN_ROTATION_H_
 #define ASH_SCREEN_ROTATION_H_
-#pragma once
 
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/base/animation/animation_delegate.h"
 #include "ui/compositor/compositor_export.h"
 #include "ui/compositor/layer_animation_element.h"
 #include "ui/gfx/point.h"
 
 namespace ui {
@@ skipping 38 matching lines @@
 
   // The target origin
   gfx::Point new_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenRotation);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SCREEN_ROTATION_H_