function testHandleAnonymousUserMismatch() {
  firebaseui.auth.widget.handler.handleAnonymousUserMismatch(
      app, container);
  assertAnonymousUserMismatchPage();
  // Clicking dismiss button should redirect to the first page.
  clickSecondaryLink();
  assertProviderSignInPage();
}
@suppress {extraRequire} Required for accessing test helper utilities.