Try that without the typo.

1999-03-30 00:08:40 +00:00 · 1999-03-30 00:08:40 +00:00 · a563079fa6
--- a/xpfe/appshell/public/MANIFEST
+++ b/xpfe/appshell/public/MANIFEST
@ -8,5 +8,5 @@ nsICmdLineService.h
 nsIWebShellWindow.h
 nsIWidgetController.h
 nsFileLocations.h
-nsXULWindowCallbacks.h
+nsIXULWindowCallbacks.h
 nsIDOMXPConnectFactory.h