Remove #pragma once from content

content/renderer/browser_plugin/old/browser_plugin_registry.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_BROWSER_PLUGIN_OLD_BROWSER_PLUGIN_REGISTRY_H_
 #define CONTENT_RENDERER_BROWSER_PLUGIN_OLD_BROWSER_PLUGIN_REGISTRY_H_
-#pragma once
 
 #include "base/id_map.h"
 #include "base/process.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
 namespace content {
 
 // This class holds references to all of the known live browser plugin
 // modules. There is one browser plugin module per guest renderer process.
 class BrowserPluginRegistry
@@ skipping 10 matching lines @@
   virtual void PluginModuleDead(
       webkit::ppapi::PluginModule* dead_module) OVERRIDE;
 
  private:
   IDMap<webkit::ppapi::PluginModule> modules_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_OLD_BROWSER_PLUGIN_REGISTRY_H_