return gIOS->NewFileURI(spec, result);
nsCOMPtr<nsIIOService> serv; if (ioService == nsnull) { serv = do_GetIOService(&rv); if (NS_FAILED(rv)) return rv; ioService = serv.get(); }  return ioService->NewFileURI(spec, result);
NS_NewFileURI(nsIURI **result,               nsIFile *spec){    ENSURE_IOSERVICE();    return gIOS->NewFileURI(spec, result);}