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

chrome/browser/resources/settings/reset_page/reset_page.js

 // Copyright 2015 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
  * 'settings-reset-page' is the settings page containing reset
  * settings.
  *
  * Example:
@@ skipping 28 matching lines @@
   /**
    * Creates and shows the specified dialog.
    * @param {string} dialogName
    * @private
    */
   showDialog_: function(dialogName) {
     var dialog = document.createElement(dialogName);
     this.shadowRoot.appendChild(dialog);
     dialog.open();
 
-    dialog.addEventListener('iron-overlay-closed', function() {
+    dialog.addEventListener('close', function() {
       dialog.remove();
     });
   },
 });