Rename the download to its final name only after the download is finished

chrome/browser/download/download_util.h

Index: chrome/browser/download/download_util.h
diff --git a/chrome/browser/download/download_util.h b/chrome/browser/download/download_util.h
index 72af5d574fc33dea907b9eb58d10e57bba47a7b7..113a3a0dc4a6acebe09c3421b446f5f312bff0c8 100644
--- a/chrome/browser/download/download_util.h
+++ b/chrome/browser/download/download_util.h
@@ -178,6 +178,14 @@ void CancelDownloadRequest(ResourceDispatcherHost* rdh,
                            int render_process_id,
                            int request_id);
 
+// Same as GetUniquePathNumber, except that it also checks the existence
+// of its .crdownload intermediate path.
+// If |path| does not exist, 0 is returned.  If it fails to find such
+// a number, -1 is returned.
+int GetUniquePathNumberWithCrDownload(const FilePath& path);
+
+// Returns a .crdownload intermediate path for the |suggested_path|.
+FilePath GetCrDownloadPath(const FilePath& suggested_path);
 
 }  // namespace download_util