Remove #pragma once from content

content/public/browser/download_url_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_PUBLIC_BROWSER_DOWNLOAD_URL_PARAMETERS_H_
 #define CONTENT_PUBLIC_BROWSER_DOWNLOAD_URL_PARAMETERS_H_
-#pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "content/public/browser/download_id.h"
 #include "content/public/browser/download_save_info.h"
 #include "content/public/common/referrer.h"
 #include "googleurl/src/gurl.h"
@@ skipping 111 matching lines @@
   ResourceDispatcherHost* resource_dispatcher_host_;
   DownloadSaveInfo save_info_;
   GURL url_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadUrlParameters);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_URL_PARAMETERS_H_