Fixed misnamed function call in popup.js in Chrome Extension tutorial

chrome/common/extensions/docs/examples/tutorials/getstarted/popup.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.
 
 /**
  * Global variable containing the query we'd like to pass to Flickr. In this
  * case, kittens!
  *
  * @type {string}
  */
@@ skipping 19 matching lines @@
       'per_page=20',
 
   /**
    * Sends an XHR GET request to grab photos of lots and lots of kittens. The
    * XHR's 'onload' event is hooks up to the 'showPhotos_' method.
    *
    * @public
    */
   requestKittens: function() {
     var req = new XMLHttpRequest();
-    req.open("GET", this.kittensOnFlickr_, true);
+    req.open("GET", this.searchOnFlickr_, true);
     req.onload = this.showPhotos_.bind(this);
     req.send(null);
   },
 
   /**
    * Handle the 'onload' event of our kitten XHR request, generated in
    * 'requestKittens', by generating 'img' elements, and stuffing them into
    * the document for display.
    *
    * @param {ProgressEvent} e The XHR ProgressEvent.
@@ skipping 23 matching lines @@
         "/" + photo.getAttribute("id") +
         "_" + photo.getAttribute("secret") +
         "_s.jpg";
   }
 };
 
 // Run our kitten generation script as soon as the document's DOM is ready.
 document.addEventListener('DOMContentLoaded', function () {
   kittenGenerator.requestKittens();
 });