Crib-enable: Add possible improvement in XXX

crib-enable.js

-/*global window, rJS, jIO, FormData, navigator, RSVP */
+/*global window, rJS, jIO, FormData, navigator, RSVP, URL */
 /*jslint indent: 2, maxerr: 3 */
 (function (window, rJS, jIO) {
   "use strict";
@@ -42,6 +42,7 @@
         path = path_list.join("/");
       }
       gadget.state_parameter_dict = {};
+      // XXX This should most likely be replaced by: new URL("./", window.location.href).href
       gadget.state_parameter_dict.default_document = window.location.protocol +
         "//" + window.location.host + path;
       this.state_parameter_dict.jio_storage = jIO.createJIO({