[Downloads] Always call DM::StartDownload() for explicit downloads.

content/browser/download/download_file_factory.h

Index: content/browser/download/download_file_factory.h
diff --git a/content/browser/download/download_file_factory.h b/content/browser/download/download_file_factory.h
index 2600e3f845520b26fc83679450ddd726bd063f45..bd083bd76b09c4491c4db6b13901357b667d8871 100644
--- a/content/browser/download/download_file_factory.h
+++ b/content/browser/download/download_file_factory.h
@@ -5,6 +5,7 @@
 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_FACTORY_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_FACTORY_H_
 
+#include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ -29,12 +30,13 @@ class CONTENT_EXPORT DownloadFileFactory {
   virtual ~DownloadFileFactory();
 
   virtual DownloadFile* CreateFile(
-      scoped_ptr<DownloadSaveInfo> save_info,
+      const DownloadSaveInfo& save_info,
       const base::FilePath& default_downloads_directory,
       const GURL& url,
       const GURL& referrer_url,
       bool calculate_hash,
-      scoped_ptr<ByteStreamReader> stream,
+      base::File file,
+      scoped_ptr<ByteStreamReader> byte_stream,
       const net::BoundNetLog& bound_net_log,
       base::WeakPtr<DownloadDestinationObserver> observer);
 };