Add a single site view page to view and modify content settings.

chrome/browser/resources/options/website_settings.js

 // Copyright 2014 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('options', function() {
   /** @const */ var Page = cr.ui.pageManager.Page;
   /** @const */ var PageManager = cr.ui.pageManager.PageManager;
   /** @const */ var ArrayDataModel = cr.ui.ArrayDataModel;
 
   /////////////////////////////////////////////////////////////////////////////
@@ skipping 105 matching lines @@
 
       this.queryDelayTimerId_ = window.setTimeout(this.searchOrigins.bind(this),
                                                   160);
     },
   };
 
   WebsiteSettingsManager.populateOrigins = function(originDict) {
     WebsiteSettingsManager.getInstance().populateOrigins_(originDict);
   };
 
+  WebsiteSettingsManager.showEditPage = function(url) {
+    WebsiteSettingsEditor.getInstance().populatePage(url);
+  };
+
   // Export
   return {
     WebsiteSettingsManager: WebsiteSettingsManager
   };
 });