Remove #pragma once from content

content/browser/resolve_proxy_msg_helper.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_BROWSER_RESOLVE_PROXY_MSG_HELPER_H_
 #define CONTENT_BROWSER_RESOLVE_PROXY_MSG_HELPER_H_
-#pragma once
 
 #include <deque>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/completion_callback.h"
 #include "net/proxy/proxy_service.h"
@@ skipping 58 matching lines @@
 
   // FIFO queue of pending requests. The first entry is always the current one.
   typedef std::deque<PendingRequest> PendingRequestList;
   PendingRequestList pending_requests_;
 
   scoped_refptr<net::URLRequestContextGetter> context_getter_;
   net::ProxyService* proxy_service_;
 };
 
 #endif  // CONTENT_BROWSER_RESOLVE_PROXY_MSG_HELPER_H_