Remove #pragma once from content

content/shell/shell_resource_dispatcher_host_delegate.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_SHELL_SHELL_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 #define CONTENT_SHELL_SHELL_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
-#pragma once
 
 #include "base/compiler_specific.h"
 #include "content/public/browser/resource_dispatcher_host_delegate.h"
 
 namespace content {
 
 class ShellResourceDispatcherHostDelegate
     : public content::ResourceDispatcherHostDelegate {
  public:
   ShellResourceDispatcherHostDelegate();
   virtual ~ShellResourceDispatcherHostDelegate();
 
   // ResourceDispatcherHostDelegate implementation.
   virtual bool AcceptAuthRequest(net::URLRequest* request,
                                  net::AuthChallengeInfo* auth_info) OVERRIDE;
   virtual content::ResourceDispatcherHostLoginDelegate* CreateLoginDelegate(
       net::AuthChallengeInfo* auth_info, net::URLRequest* request) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellResourceDispatcherHostDelegate);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_RESOURCE_DISPATCHER_HOST_DELEGATE_H_