Migrate <cr-dialog> from PaperDialogBehavior to native <dialog>.

chrome/test/data/webui/settings/people_page_test.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('settings_people_page', function() {
   /**
    * @constructor
    * @implements {settings.ProfileInfoBrowserProxy}
    * @extends {settings.TestBrowserProxy}
    */
@@ skipping 140 matching lines @@
       test('GetProfileInfo', function() {
         var disconnectButton = null;
         return browserProxy.whenCalled('getSyncStatus').then(function() {
           Polymer.dom.flush();
           disconnectButton = peoplePage.$$('#disconnectButton');
           assertTrue(!!disconnectButton);
 
           MockInteractions.tap(disconnectButton);
           Polymer.dom.flush();
 
-          assertTrue(peoplePage.$.disconnectDialog.opened);
+          assertTrue(peoplePage.$.disconnectDialog.open);
           assertFalse(peoplePage.$.deleteProfile.hidden);
 
           var disconnectConfirm = peoplePage.$.disconnectConfirm;
           assertTrue(!!disconnectConfirm);
           assertFalse(disconnectConfirm.hidden);
           MockInteractions.tap(disconnectConfirm);
 
           return browserProxy.whenCalled('signOut');
         }).then(function(deleteProfile) {
           Polymer.dom.flush();
 
           assertFalse(deleteProfile);
 
           cr.webUIListenerCallback('sync-status-changed', {
             signedIn: true,
             domain: 'example.com',
           });
           Polymer.dom.flush();
 
-          assertFalse(peoplePage.$.disconnectDialog.opened);
+          assertFalse(peoplePage.$.disconnectDialog.open);
           MockInteractions.tap(disconnectButton);
           Polymer.dom.flush();
 
-          assertTrue(peoplePage.$.disconnectDialog.opened);
+          assertTrue(peoplePage.$.disconnectDialog.open);
           assertTrue(peoplePage.$.deleteProfile.hidden);
 
           var disconnectManagedProfileConfirm =
               peoplePage.$.disconnectManagedProfileConfirm;
           assertTrue(!!disconnectManagedProfileConfirm);
           assertFalse(disconnectManagedProfileConfirm.hidden);
 
           browserProxy.resetResolver('signOut');
           MockInteractions.tap(disconnectManagedProfileConfirm);
 
@@ skipping 22 matching lines @@
   }
 
   return {
     registerTests: function() {
       registerProfileInfoTests();
       if (!cr.isChromeOS)
         registerSyncStatusTests();
     },
   };
 });