[Popular Sites] Add Variations parameter to override URL path

components/ntp_tiles/webui/resources/ntp_tiles_internals.js

 // Copyright 2016 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('chrome.ntp_tiles_internals', function() {
   'use strict';
 
   var initialize = function() {
     $('submit-update').addEventListener('click', function(event) {
       event.preventDefault();
       chrome.send('update', [{
         "popular": {
           "overrideURL": $('override-url').value,
+          "overrideDirectory": $('override-directory').value,
           "overrideCountry": $('override-country').value,
           "overrideVersion": $('override-version').value,
         },
       }]);
     });
 
     $('suggestions-fetch').addEventListener('click', function(event) {
       event.preventDefault();
       chrome.send('fetchSuggestions');
     });
@@ skipping 21 matching lines @@
   // Return an object with all of the exports.
   return {
     initialize: initialize,
     receiveSourceInfo: receiveSourceInfo,
     receiveSites: receiveSites,
   };
 });
 
 document.addEventListener('DOMContentLoaded',
                           chrome.ntp_tiles_internals.initialize);
-