[multi-profiles] Allow bringing up sign in UI even if all users are restricted per their policies

chrome/browser/resources/login/display_manager.js

 // Copyright 2014 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.
 
 /**
  * @fileoverview Display manager for WebUI OOBE and login.
  */
 
 // TODO(xiyuan): Find a better to share those constants.
 /** @const */ var SCREEN_OOBE_NETWORK = 'connect';
@@ skipping 956 matching lines @@
   DisplayManager.showTpmError = function() {
     login.TPMErrorMessageScreen.show();
   };
 
   /**
    * Clears error bubble.
    */
   DisplayManager.clearErrors = function() {
     $('bubble').hide();
     this.errorMessageWasShownForTesting_ = false;
+
+    var bubbles = document.querySelectorAll('.bubble-shown');
+    for (var i = 0; i < bubbles.length; ++i)
+      bubbles[i].classList.remove('bubble-shown');
   };
 
   /**
    * Sets text content for a div with |labelId|.
    * @param {string} labelId Id of the label div.
    * @param {string} labelText Text for the label.
    */
   DisplayManager.setLabelText = function(labelId, labelText) {
     $(labelId).textContent = labelText;
   };
@@ skipping 33 matching lines @@
    */
   DisplayManager.refocusCurrentPod = function() {
     $('pod-row').refocusCurrentPod();
   };
 
   // Export
   return {
     DisplayManager: DisplayManager
   };
 });