[Coverity] Changed pass-by-value to pass-by-ref

content/browser/download/download_resource_handler.h

Index: content/browser/download/download_resource_handler.h
diff --git a/content/browser/download/download_resource_handler.h b/content/browser/download/download_resource_handler.h
index f92f088101520f38ed19fdf3339d3494a09b1c9e..e6ad33c27987524911cfa352d6e26678afb33bd8 100644
--- a/content/browser/download/download_resource_handler.h
+++ b/content/browser/download/download_resource_handler.h
@@ -101,7 +101,7 @@ class DownloadResourceHandler : public ResourceHandler {
 
   // Generates a DownloadId and calls DownloadFileManager.
   void StartOnUIThread(scoped_ptr<DownloadCreateInfo> info,
-                       DownloadRequestHandle handle);
+                       const DownloadRequestHandle& handle);
   void set_download_id(content::DownloadId id);
 
   content::DownloadId download_id_;