Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/extension_event_router_forwarder.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 CHROME_BROWSER_EXTENSIONS_EXTENSION_EVENT_ROUTER_FORWARDER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_EVENT_ROUTER_FORWARDER_H_
-#pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 
 class GURL;
 
@@ skipping 74 matching lines @@
                                         Profile* restrict_to_profile,
                                         const GURL& event_url);
 
  private:
   friend class base::RefCountedThreadSafe<ExtensionEventRouterForwarder>;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionEventRouterForwarder);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_EVENT_ROUTER_FORWARDER_H_