Remove #pragma once from content

content/renderer/render_thread_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_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
-#pragma once
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/observer_list.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "build/build_config.h"
 #include "content/common/child_process.h"
@@ skipping 282 matching lines @@
   scoped_ptr<content::BrowserPluginRegistry> browser_plugin_registry_;
 
   ObserverList<content::RenderProcessObserver> observers_;
 
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> gpu_vda_context3d_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_