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

chrome/browser/resources/settings/site_settings/site_list.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-site-list' shows a list of Allowed and Blocked sites for a given
  * category.
  */
 Polymer({
@@ skipping 170 matching lines @@
    * A handler for the Add Site button.
    * @private
    */
   onAddSiteTap_: function() {
     var dialog = document.createElement('add-site-dialog');
     dialog.category = this.category;
     this.shadowRoot.appendChild(dialog);
 
     dialog.open(this.categorySubtype);
 
-    dialog.addEventListener('iron-overlay-closed', function() {
+    dialog.addEventListener('close', function() {
       dialog.remove();
     });
   },
 
   /**
    * Handles the expanding and collapsing of the sites list.
    * @private
    */
   onToggle_: function(e) {
     if (this.$.category.opened)
@@ skipping 262 matching lines @@
     // is redundant to also list all the sites that are blocked.
     if (this.isAllowList_())
       return true;
 
     if (this.isSessionOnlyList_())
       return siteList.length > 0;
 
     return toggleState;
   },
 });