function getGoogleAccountsId() {
  return (goog.global[firebaseui.auth.GoogleYolo.NAMESPACE_] &&
      goog.global[firebaseui.auth.GoogleYolo.NAMESPACE_]['accounts'] &&
      goog.global[firebaseui.auth.GoogleYolo.NAMESPACE_]['accounts']['id']) ||
      null;
}
@return {?SmartLockApi} The SmartLockApi handle if available.