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

chrome/browser/resources/chromeos/chromevox/cvox2/background/cursors_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.
 
 // Include test fixture.
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js']);
 
 /**
  * Test fixture for cvox2.cursors.
  * @constructor
  * @extends {ChromeVoxNextE2ETest}
  */
-function CursorsTest() {}
+function CursorsTest() {
+  ChromeVoxNextE2ETest.call(this);
+}
 
 CursorsTest.prototype = {
   __proto__: ChromeVoxNextE2ETest.prototype,
 
   /** Test cursors.Cursor. @const {string} */
   CURSOR: 'cursor',
 
   /** Test cursors.Range. @const {string} */
   RANGE: 'range',
 
@@ skipping 76 matching lines @@
 
       // This occurs as a result of a load complete.
       var start = AutomationUtil.findNodePost(root,
           FORWARD,
           AutomationPredicate.leaf);
 
       var cursor = new cursors.Cursor(start, 0);
       if (!opt_testType || opt_testType == this.CURSOR) {
         var cursor = new cursors.Cursor(start, 0);
         this.cursorMoveAndAssert(cursor, moves);
-        testDone();
       } else if (opt_testType == this.RANGE) {
         var range = new cursors.Range(cursor, cursor);
         this.rangeMoveAndAssert(range, moves);
-        testDone();
       }
-    }.bind(this));
+    });
   },
 
 simpleDoc: function() {/*!
     <p>start <span>same line</span>
     <p>end
   */}
 };
 
 TEST_F('CursorsTest', 'CharacterCursor', function() {
   this.runCursorMovesOnDocument(this.simpleDoc, [
@@ skipping 133 matching lines @@
       [LINE, FORWARD, {value: 'end', index: 0}, {value: 'end', index: 3}],
 
       [LINE, BACKWARD,
           {value: 'start ', index: 0}, {value: 'same line', index: 9}],
 
       [LINE, BACKWARD,
           {value: 'start ', index: 0}, {value: 'same line', index: 9}],
   ], this.RANGE);
 });