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

chrome/browser/resources/chromeos/chromevox/chromevox_tests.gypi

 # 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.
 
 {
   'includes': [
     '../../../../js_unittest_vars.gypi',
   ],
   'variables': {
     'chromevox_test_deps_js_file': '<(SHARED_INTERMEDIATE_DIR)/chrome/browser/resources/chromeos/chromevox/test_deps.js',
@@ skipping 95 matching lines @@
                 'external_v8': 'n',
               }],
             ],
           },
           'inputs': [
             '<(gypv8sh)',
             '<(PRODUCT_DIR)/d8<(EXECUTABLE_SUFFIX)',
             '<(mock_js)',
             '<(test_api_js)',
             '<(js2gtest)',
+            'testing/callback_helper.js',
             'testing/chromevox_e2e_test_base.js',
+            'testing/chromevox_next_e2e_test_base.js',
             'testing/assert_additions.js',
           ],
           'outputs': [
             '<(INTERMEDIATE_DIR)/<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT)-gen.cc',
             '<(PRODUCT_DIR)/test_data/chrome/browser/resources/chromeos/chromevox/<(RULE_INPUT_DIRNAME)/<(RULE_INPUT_ROOT).extjs',
           ],
           'process_outputs_as_sources': 1,
           'action': [
             'python',
             '<(gypv8sh)',
@@ skipping 128 matching lines @@
             '<@(js_files)',
           ],
         },
       ],
       'dependencies': [
         'chromevox_test_messages_js',
       ],
     },  # target chromevox_test_deps_js
   ],
 }