Network connectivity errors handling (incl. CP) for enrollment flow

chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 login.createScreen('OAuthEnrollmentScreen', 'oauth-enrollment', function() {
   /** @const */ var STEP_SIGNIN = 'signin';
   /** @const */ var STEP_WORKING = 'working';
   /** @const */ var STEP_ERROR = 'error';
   /** @const */ var STEP_EXPLAIN = 'explain';
   /** @const */ var STEP_SUCCESS = 'success';
 
   /** @const */ var HELP_TOPIC_ENROLLMENT = 4631259;
 
   return {
     EXTERNAL_API: [
       'showStep',
       'showError',
       'showWorking',
       'setAuthenticatedUserEmail',
+      'doReload',
     ],
 
     /**
      * URL to load in the sign in frame.
      */
     signInUrl_: null,
 
     /**
      * Dialog to confirm that auto-enrollment should really be cancelled.
      * This is only created the first time it's used.
@@ skipping 186 matching lines @@
     setAuthenticatedUserEmail: function(attemptToken, email) {
       if (this.attemptToken_ != attemptToken)
         return;
 
       if (!email)
         this.showError(loadTimeData.getString('fatalEnrollmentError'), false);
       else
         chrome.send('oauthEnrollCompleteLogin', [email]);
     },
 
+    doReload: function() {
+      $('oauth-enroll-signin-frame').contentWindow.location.href =
+          this.signInUrl_;
+    },
+
     /**
      * Handler for cancellations of an enforced auto-enrollment.
      */
     cancelAutoEnrollment: function() {
       // Only to be activated for the explain step in auto-enrollment.
       if (this.currentStep_ !== STEP_EXPLAIN)
         return;
 
       if (!this.confirmDialog_) {
         this.confirmDialog_ = new cr.ui.dialogs.ConfirmDialog(document.body);
@@ skipping 61 matching lines @@
                     [msg.attemptToken]);
       }
 
       if (msg.method == 'authPageLoaded' && this.currentStep_ == STEP_SIGNIN) {
         if (msg.isSAML) {
           $('oauth-saml-notice-message').textContent = loadTimeData.getStringF(
               'samlNotice',
               msg.domain);
         }
         this.classList.toggle('saml', msg.isSAML);
+        chrome.send('frameLoadingCompleted', [0]);
       }
 
       if (msg.method == 'insecureContentBlocked') {
         this.showError(
             loadTimeData.getStringF('insecureURLEnrollmentError', msg.url),
             false);
       }
     }
   };
 });