Remove #pragma once from content

content/renderer/pepper/pepper_plugin_delegate_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_PEPPER_PEPPER_PLUGIN_DELEGATE_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_DELEGATE_IMPL_H_
-#pragma once
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/id_map.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 497 matching lines @@
 
   scoped_ptr<PepperDeviceEnumerationEventHandler>
       device_enumeration_event_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPluginDelegateImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_DELEGATE_IMPL_H_