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

content/browser/download/download_resource_handler.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_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 23 matching lines @@
 class DownloadResourceHandler
     : public content::ResourceHandler,
       public base::SupportsWeakPtr<DownloadResourceHandler> {
  public:
   typedef content::DownloadUrlParameters::OnStartedCallback OnStartedCallback;
 
   // started_cb will be called exactly once on the UI thread.
   DownloadResourceHandler(
       net::URLRequest* request,
       const OnStartedCallback& started_cb,
-      const content::DownloadSaveInfo& save_info);
+      scoped_ptr<content::DownloadSaveInfo> save_info);
 
   virtual bool OnUploadProgress(int request_id,
                                 uint64 position,
                                 uint64 size) OVERRIDE;
 
   // Not needed, as this event handler ought to be the final resource.
   virtual bool OnRequestRedirected(int request_id,
                                    const GURL& url,
                                    content::ResourceResponse* response,
                                    bool* defer) OVERRIDE;
@@ skipping 44 matching lines @@
   void SetContentDisposition(const std::string& content_disposition);
 
   content::GlobalRequestID global_id_;
   int render_view_id_;
   std::string content_disposition_;
   int64 content_length_;
   net::URLRequest* request_;
   // This is read only on the IO thread, but may only
   // be called on the UI thread.
   OnStartedCallback started_cb_;
-  content::DownloadSaveInfo save_info_;
+  scoped_ptr<content::DownloadSaveInfo> save_info_;
 
   // Data flow
   scoped_refptr<net::IOBuffer> read_buffer_;       // From URLRequest.
   scoped_ptr<content::ByteStreamWriter> stream_writer_; // To rest of system.
 
   // The following are used to collect stats.
   base::TimeTicks download_start_time_;
   base::TimeTicks last_read_time_;
   base::TimeTicks last_stream_pause_time_;
   base::TimeDelta total_pause_time_;
   size_t last_buffer_size_;
   int64 bytes_read_;
   std::string accept_ranges_;
 
   int pause_count_;
   bool was_deferred_;
 
   // For DCHECKing
   bool on_response_started_called_;
 
   static const int kReadBufSize = 32768;  // bytes
   static const int kThrottleTimeMs = 200;  // milliseconds
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_