Fix the last scoped_refptr misuses in NewRunnableMethod.

chrome/browser/download/download_item.cc

Index: chrome/browser/download/download_item.cc
diff --git a/chrome/browser/download/download_item.cc b/chrome/browser/download/download_item.cc
index 1d93667300bdbc73996ec44023124e4f372518e9..43321aa7b050aeb78fc9f86f96aecaca2fab5c82 100644
--- a/chrome/browser/download/download_item.cc
+++ b/chrome/browser/download/download_item.cc
@@ -404,7 +404,8 @@ void DownloadItem::OnSafeDownloadFinished(DownloadFileManager* file_manager) {
         BrowserThread::FILE, FROM_HERE,
         NewRunnableMethod(
             file_manager, &DownloadFileManager::OnFinalDownloadName,
-            id(), GetTargetFilePath(), false, download_manager_));
+            id(), GetTargetFilePath(), false,
+            make_scoped_refptr(download_manager_)));
     return;
   }