MD User manager: Migrate from PaperDialogBehavior to cr-dialog.

chrome/test/data/webui/md_user_manager/control_bar_tests.js

 // Copyright 2016 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('user_manager.control_bar_tests', function() {
   /** @return {!ControlBarElement} */
   function createElement() {
     var controlBarElement = document.createElement('control-bar');
     document.body.appendChild(controlBarElement);
     return controlBarElement;
@@ skipping 64 matching lines @@
 
         browserProxy.setAllProfilesLocked(true);
 
         controlBarElement = createElement();
 
         errorDialogElement = document.querySelector('error-dialog');
       });
 
       teardown(function(done) {
         controlBarElement.remove();
+        if (errorDialogElement.$.dialog.open)
+          errorDialogElement.$.dialog.close();
+
         // Allow asynchronous tasks to finish.
         setTimeout(done);
       });
 
       test('Cannot create profile', function() {
         // Simulate clicking 'Create Profile'.
         MockInteractions.tap(controlBarElement.$.addUser);
 
         return browserProxy.whenCalled('areAllProfilesLocked').then(function() {
           // Make sure DOM is up to date.
           Polymer.dom.flush();
 
           // The dialog is visible.
-          assertTrue(errorDialogElement.$.dialog.opened);
+          assertTrue(errorDialogElement.$.dialog.open);
         });
       });
 
       test('Cannot launch guest profile', function() {
         // Simulate clicking 'Browse as guest'.
         MockInteractions.tap(controlBarElement.$.launchGuest);
 
         return browserProxy.whenCalled('areAllProfilesLocked').then(function() {
           // Make sure DOM is up to date.
           Polymer.dom.flush();
 
           // The error dialog is visible.
-          assertTrue(errorDialogElement.$.dialog.opened);
+          assertTrue(errorDialogElement.$.dialog.open);
         });
       });
 
       test('Can create profile with force signin', function() {
         controlBarElement.isForceSigninEnabled_ = true;
         Polymer.dom.flush();
         return new Promise(function(resolve, reject) {
           // We expect to go to the 'create-profile' page.
           listenOnce(controlBarElement, 'change-page', function(event) {
             if (event.detail.page == 'create-user-page')
@@ skipping 12 matching lines @@
         return browserProxy.whenCalled('launchGuestUser');
       });
 
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });