Remove #pragma once from content

content/browser/download/download_file.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_FILE_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
-#pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/download_id.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 
 namespace content {
@@ skipping 44 matching lines @@
   virtual int Id() const = 0;
   virtual DownloadManager* GetDownloadManager() = 0;
   virtual const DownloadId& GlobalId() const = 0;
 
   virtual std::string DebugString() const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_