Remove #pragma once from ash

ash/accelerators/focus_manager_factory.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_ACCELERATORS_FOCUS_MANAGER_FACTORY_H_
 #define ASH_ACCELERATORS_FOCUS_MANAGER_FACTORY_H_
-#pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/views/focus/focus_manager_delegate.h"
 #include "ui/views/focus/focus_manager_factory.h"
 
 namespace ash {
 
 // A factory class for creating a custom views::FocusManager object which
 // supports Ash shortcuts.
@@ skipping 16 matching lines @@
     virtual ui::AcceleratorTarget* GetCurrentTargetForAccelerator(
         const ui::Accelerator& accelerator) const OVERRIDE;
   };
 
   DISALLOW_COPY_AND_ASSIGN(AshFocusManagerFactory);
 };
 
 }  // namespace ash
 
 #endif  // ASH_ACCELERATORS_FOCUS_MANAGER_FACTORY_H_