Shift passage of FileStream in downloads system to be by scoped_ptr<>.

content/browser/download/download_file_impl.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_IMPL_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_
 
 #include "content/browser/download/download_file.h"
 
 #include "base/memory/ref_counted.h"
@@ skipping 11 matching lines @@
 namespace content {
 class ByteStreamReader;
 class DownloadManager;
 class PowerSaveBlocker;
 }
 
 class CONTENT_EXPORT DownloadFileImpl : virtual public content::DownloadFile {
  public:
   // Takes ownership of the object pointed to by |request_handle|.
   // |bound_net_log| will be used for logging the download file's events.
-  DownloadFileImpl(const DownloadCreateInfo* info,
+  DownloadFileImpl(scoped_ptr<DownloadCreateInfo> info,
                    scoped_ptr<content::ByteStreamReader> stream,
-                   DownloadRequestHandleInterface* request_handle,
+                   scoped_ptr<DownloadRequestHandleInterface> request_handle,
                    scoped_refptr<content::DownloadManager> download_manager,
                    bool calculate_hash,
                    scoped_ptr<content::PowerSaveBlocker> power_save_blocker,
                    const net::BoundNetLog& bound_net_log);
   virtual ~DownloadFileImpl();
 
   // DownloadFile functions.
   virtual content::DownloadInterruptReason Initialize() OVERRIDE;
   virtual void Rename(const FilePath& full_path,
                       bool overwrite_existing_file,
@@ skipping 61 matching lines @@
 
   base::WeakPtrFactory<DownloadFileImpl> weak_factory_;
 
   // RAII handle to keep the system from sleeping while we're downloading.
   scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadFileImpl);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_