Prevent the Ctrl+Alt+E shortcut from cancelling from the normal enrollment screen too.

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.
 
 cr.define('oobe', function() {
   /**
    * Creates a new oobe screen div.
    * @constructor
    * @extends {HTMLDivElement}
    */
@@ skipping 234 matching lines @@
      */
     showWorking: function(message) {
       $('oauth-enroll-working-message').textContent = message;
       this.showStep('working');
     },
 
     /**
      * Handler for cancellations of an enforced auto-enrollment.
      */
     cancelAutoEnrollment: function() {
+      if (!this.isAutoEnrollment_)
+        return;
       if (!this.confirmDialog_) {
         this.confirmDialog_ = new cr.ui.dialogs.ConfirmDialog(document.body);
         this.confirmDialog_.setOkLabel(
             localStrings.getString('oauthEnrollCancelAutoEnrollmentConfirm'));
         this.confirmDialog_.setCancelLabel(
             localStrings.getString('oauthEnrollCancelAutoEnrollmentGoBack'));
         this.confirmDialog_.setInitialFocusOnCancel();
       }
       this.confirmDialog_.show(
           localStrings.getString('oauthEnrollCancelAutoEnrollmentReally'),
@@ skipping 36 matching lines @@
       var msg = m.data;
       if (msg.method == 'completeLogin' && this.isSigninMessage_(m))
         chrome.send('oauthEnrollCompleteLogin', [msg.email, msg.password]);
     }
   };
 
   return {
     OAuthEnrollmentScreen: OAuthEnrollmentScreen
   };
 });