Remove #pragma once from content

content/browser/renderer_host/backing_store_win.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_WIN_H_
 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_WIN_H_
-#pragma once
 
 #include <windows.h>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/browser/renderer_host/backing_store.h"
 
 class BackingStoreWin : public BackingStore {
  public:
   BackingStoreWin(content::RenderWidgetHost* widget, const gfx::Size& size);
@@ skipping 30 matching lines @@
   // Handle to the original bitmap in the dc.
   HANDLE original_bitmap_;
 
   // Number of bits per pixel of the screen.
   int color_depth_;
 
   DISALLOW_COPY_AND_ASSIGN(BackingStoreWin);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_WIN_H_