add a new, blank version of content settings so that a new UI may be prototyped

chrome/browser/resources/options/content_settings.js

 // Copyright (c) 2012 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.
 
+if (!loadTimeData.getBoolean('newContentSettings')) {
+
 cr.define('options', function() {
   /** @const */ var OptionsPage = options.OptionsPage;
 
   //////////////////////////////////////////////////////////////////////////////
   // ContentSettings class:
 
   /**
    * Encapsulated handling of content settings page.
    * @constructor
    */
@@ skipping 152 matching lines @@
     $('pepper-flash-cameramic-section').style.display = '';
     $('pepper-flash-cameramic-exceptions-div').style.display = '';
   }
 
   // Export
   return {
     ContentSettings: ContentSettings
   };
 
 });
+
+}