Allow the PDF extension to load its plugin correctly

chrome/test/data/pdf/basic_test.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.
 
 var tests = [
   /**
    * Test that some key elements exist and that they have the appropriate
    * constructor name. This verifies that polymer is working correctly.
    */
   function testHasElements() {
@@ skipping 12 matching lines @@
           String(element.constructor).indexOf(elementNames[i]) != -1);
     }
     chrome.test.succeed();
   },
 
   /**
    * Test that the plugin element exists and is navigated to the correct URL.
    */
   function testPluginElement() {
     var plugin = document.getElementById('plugin');
-    chrome.test.assertEq('object', plugin.localName);
+    chrome.test.assertEq('embed', plugin.localName);
 
     chrome.test.assertTrue(
         plugin.getAttribute('src').indexOf('/pdf/test.pdf') != -1);
     chrome.test.succeed();
   },
 ];
 
 chrome.test.runTests(tests);