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

content/browser/download/download_file_factory.cc

Index: content/browser/download/download_file_factory.cc
diff --git a/content/browser/download/download_file_factory.cc b/content/browser/download/download_file_factory.cc
index 819137f44f7a54c3a070b73049e4d89d6a64ddb7..74683026506df04ac8f7679c033b347447e9ee25 100644
--- a/content/browser/download/download_file_factory.cc
+++ b/content/browser/download/download_file_factory.cc
@@ -12,14 +12,18 @@ namespace content {
 DownloadFileFactory::~DownloadFileFactory() {}
 
 DownloadFile* DownloadFileFactory::CreateFile(
-    DownloadCreateInfo* info,
+    scoped_ptr<DownloadCreateInfo> info,
     scoped_ptr<content::ByteStreamReader> stream,
     DownloadManager* download_manager,
     bool calculate_hash,
     const net::BoundNetLog& bound_net_log) {
+  // Ownership will be taken by DownloadFileImpl.
+  scoped_ptr<DownloadRequestHandleInterface> request_handle(
+      new DownloadRequestHandle(info->request_handle));
+
   return new DownloadFileImpl(
-      info, stream.Pass(), new DownloadRequestHandle(info->request_handle),
-      download_manager, calculate_hash,
+      info.Pass(), stream.Pass(), request_handle.Pass(), download_manager,
+      calculate_hash,
       scoped_ptr<content::PowerSaveBlocker>(
           new content::PowerSaveBlocker(
               content::PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension,