Remove #pragma once from content

content/common/webkitplatformsupport_impl.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 CONTENT_COMMON_CONTENT_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define CONTENT_COMMON_CONTENT_WEBKITPLATFORMSUPPORT_IMPL_H_
-#pragma once
 
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
 #include "ui/base/layout.h"
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
 class GpuChannelHostFactory;
 
 namespace content {
 
@@ skipping 21 matching lines @@
       const WebKit::WebGraphicsContext3D::Attributes& attributes);
 
  protected:
   virtual GpuChannelHostFactory* GetGpuChannelHostFactory();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_CONTENT_WEBKITPLATFORMSUPPORT_IMPL_H_