public function buildProviderPageResponse(PhabricatorAuthProvider $provider, $content)
 {
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->setBorder(true);
     if ($this->getRequest()->getUser()->isLoggedIn()) {
         $crumbs->addTextCrumb(pht('Link Account'), $provider->getSettingsURI());
     } else {
         $crumbs->addTextCrumb(pht('Login'), $this->getApplicationURI('start/'));
     }
     $crumbs->addTextCrumb($provider->getProviderName());
     return $this->buildApplicationPage(array($crumbs, $content), array('title' => pht('Login')));
 }