AU: send success events to Omaha at more points in the update process.

omaha_request_action.h

Index: omaha_request_action.h
diff --git a/omaha_request_action.h b/omaha_request_action.h
index 307798bd0539b8414cfd5ebcd2f8b4fdf65f525f..5564e737e56629600160a9a9e03cb15b7fd7441c 100644
--- a/omaha_request_action.h
+++ b/omaha_request_action.h
@@ -55,6 +55,8 @@ struct OmahaEvent {
     kTypeDownloadComplete = 1,
     kTypeInstallComplete = 2,
     kTypeUpdateComplete = 3,
+    kTypeUpdateDownloadStarted = 13,
+    kTypeUpdateDownloadFinished = 14,
   };
 
   enum Result {