code: function _isAndroid() {
      var userAgent = Object(_angular_platform_browser__WEBPACK_IMPORTED_MODULE_4__["ɵgetDOM"])() ? Object(_angular_platform_browser__WEBPACK_IMPORTED_MODULE_4__["ɵgetDOM"])().getUserAgent() : '';
      return /android (\d+)/.test(userAgent.toLowerCase());
  }
docs: We must check whether the agent is Android because composition events
  behave differently between iOS and Android.