/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

"use strict";

module.exports = {
  getTopWindow(win) {
    return win.top;
  },
  defineLazyGetter() {},
  makeInfallible: fn => fn,
};