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

content/browser/download/download_file_impl.cc

Index: content/browser/download/download_file_impl.cc
diff --git a/content/browser/download/download_file_impl.cc b/content/browser/download/download_file_impl.cc
index 7599900f108da8ba87e9bd1e7801bd9c8307528b..de7b0c6a7d943313e30149ec5fd88ac12d8b7895 100644
--- a/content/browser/download/download_file_impl.cc
+++ b/content/browser/download/download_file_impl.cc
@@ -28,20 +28,20 @@ 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),