text: self.importScripts('/resources/testharness.js');
  
  test(function() {
      let xhr = new XMLHttpRequest();
      assert_not_exists(xhr, "responseXML", "responseXML should not be available on instances.");
      assert_not_exists(XMLHttpRequest.prototype, "responseXML", "responseXML should not be on the prototype.");
  }, "XMLHttpRequest's responseXML property should not be exposed in workers.");
  
  done();
  