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

content/browser/download/download_file_impl.cc

 // 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.
 
 #include "content/browser/download/download_file_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
@@ skipping 10 matching lines @@
 #include "net/base/io_buffer.h"
 
 using content::BrowserThread;
 using content::DownloadId;
 using content::DownloadManager;
 
 const int kUpdatePeriodMs = 500;
 const int kMaxTimeBlockingFileThreadMs = 1000;
 
 DownloadFileImpl::DownloadFileImpl(
-    const DownloadCreateInfo* info,
+    scoped_ptr<DownloadCreateInfo> info,
     scoped_ptr<content::ByteStreamReader> stream,
     DownloadRequestHandleInterface* request_handle,
     scoped_refptr<DownloadManager> download_manager,
     bool calculate_hash,
     scoped_ptr<content::PowerSaveBlocker> power_save_blocker,
     const net::BoundNetLog& bound_net_log)
-        : file_(info->save_info.file_path,
+        : file_(info->save_info->file_path,
                 info->url(),
                 info->referrer_url,
                 info->received_bytes,
                 calculate_hash,
-                info->save_info.hash_state,
-                info->save_info.file_stream,
+                info->save_info->hash_state,
+                info->save_info->file_stream.Pass(),
                 bound_net_log),
           stream_reader_(stream.Pass()),
           id_(info->download_id),
           default_download_directory_(info->default_download_directory),
           request_handle_(request_handle),
           download_manager_(download_manager),
           bytes_seen_(0),
           bound_net_log_(bound_net_log),
           weak_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
           power_save_blocker_(power_save_blocker.Pass()) {
@@ skipping 252 matching lines @@
   }
 }
 
 void DownloadFileImpl::SendUpdate() {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&DownloadManager::UpdateDownload,
                  download_manager_, id_.local(),
                  BytesSoFar(), CurrentSpeed(), GetHashState()));
 }