Convert Site Details to settings-subpage.

chrome/browser/resources/settings/site_settings/site_details_permission.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
  * 'site-details-permission' handles showing the state of one permission, such
  * as Geolocation, for a given origin.
  */
 Polymer({
   is: 'site-details-permission',
 
   behaviors: [SiteSettingsBehavior, WebUIListenerBehavior],
 
   properties: {
     /**
      * The site that this widget is showing details for.
      * @type {SiteException}
      */
-    site: {
-      type: Object,
-      observer: 'siteChanged_',
-    },
+    site: Object,
 
     i18n_: {
       readOnly: true,
       type: Object,
       value: function() {
         return {
           allowAction: loadTimeData.getString('siteSettingsActionAllow'),
           blockAction: loadTimeData.getString('siteSettingsActionBlock'),
         };
       },
     },
   },
 
+  observers: ['siteChanged_(site, category)'],
+
   /** @override */
   attached: function() {
     this.addWebUIListener('contentSettingSitePermissionChanged',
         this.sitePermissionChanged_.bind(this));
   },
 
   /**
    * Sets the site to display.
    * @param {!SiteException} site The site to display.
    * @private
@@ skipping 48 matching lines @@
     // TODO(finnur): Compare with event.detail.item.dataset.permission directly
     //     once attrForSelected is in use.
     var action = event.detail.item.innerText;
     var value = (action == this.i18n_.allowAction) ?
         settings.PermissionValues.ALLOW :
         settings.PermissionValues.BLOCK;
     this.setCategoryPermissionForOrigin(
         this.site.origin, '', value, this.category);
   },
 });