[Popular Sites] Add Variations parameter to override URL path

components/ntp_tiles/webui/resources/popular_sites_internals.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.
 
 cr.define('chrome.popular_sites_internals', function() {
   'use strict';
 
   function initialize() {
     function submitUpdate(event) {
       $('download-result').textContent = '';
       chrome.send('update', [$('override-url').value,
+                             $('override-directory').value,
                              $('override-country').value,
                              $('override-version').value]);
       event.preventDefault();
     }
 
     $('submit-update').addEventListener('click', submitUpdate);
 
     function viewJson(event) {
       $('json-value').textContent = '';
       chrome.send('viewJson');
       event.preventDefault();
     }
 
     $('view-json').addEventListener('click', viewJson);
 
     chrome.send('registerForEvents');
   }
 
-  function receiveOverrides(url, country, version) {
+  function receiveOverrides(url, directory, country, version) {
     $('override-url').value = url;
+    $('override-directory').value = directory;
     $('override-country').value = country;
     $('override-version').value = version;
   }
 
   function receiveDownloadResult(result) {
     $('download-result').textContent = result;
   }
 
   function receiveSites(sites) {
     jstProcess(new JsEvalContext(sites), $('info'));
@@ skipping 10 matching lines @@
     initialize: initialize,
     receiveOverrides: receiveOverrides,
     receiveDownloadResult: receiveDownloadResult,
     receiveSites: receiveSites,
     receiveJson: receiveJson,
   };
 });
 
 document.addEventListener('DOMContentLoaded',
                           chrome.popular_sites_internals.initialize);
-