Fix ChromeVox next tests to fail instead of timing out where applicable.

chrome/browser/resources/chromeos/chromevox/cvox2/background/output_test.extjs

 // 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.
 
 GEN_INCLUDE(['../../testing/assert_additions.js']);
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js']);
 
 /**
  * Test fixture for output.js.
  * @constructor
  * @extends {ChromeVoxNextE2ETestBase}
  */
-function OutputE2ETest() {}
+function OutputE2ETest() {
+  ChromeVoxNextE2ETest.call(this);
+}
 
 OutputE2ETest.prototype = {
   __proto__: ChromeVoxNextE2ETest.prototype,
 
   /** @override */
   setUp: function() {
     window.Dir = AutomationUtil.Dir;
   }
 };
 
 TEST_F('OutputE2ETest', 'RenderBasic', function() {
   this.runWithLoadedTree('<a href="#">Click here</a>',
     function(root) {
       var link = root.firstChild.firstChild;
       var range = cursors.Range.fromNode(link);
       var o = new Output().withSpeechAndBraille(range, null, 'navigate');
       assertEqualsJSON({string_: 'Click here Link', 'spans_': [
                         {value: 'name', start: 0, end: 10},
                         // Link earcon.
                         {value: {}, start: 11, end: 15}
           ]},
           o.getBuffer());
-      testDone();
-  }.bind(this));
+  });
 });