Remove #pragma once from content

content/browser/download/download_net_log_parameters.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_DOWNLOAD_DOWNLOAD_NET_LOG_PARAMETERS_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_NET_LOG_PARAMETERS_H_
-#pragma once
 
 #include <string>
 
 #include "content/public/browser/download_item.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 
 class FilePath;
 class GURL;
 
@@ skipping 55 matching lines @@
                                  net::NetLog::LogLevel log_level);
 
 // Returns NetLog parameters when a File has an error.
 base::Value* FileErrorCallback(const char* operation,
                                net::Error net_error,
                                net::NetLog::LogLevel log_level);
 
 }  // namespace download_net_logs
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_NET_LOG_PARAMETERS_H_