Revert of Enable a11y audit for chrome://settings

chrome/browser/ui/webui/options/language_options_browsertest.js

Index: chrome/browser/ui/webui/options/language_options_browsertest.js
diff --git a/chrome/browser/ui/webui/options/language_options_browsertest.js b/chrome/browser/ui/webui/options/language_options_browsertest.js
index fc5ffba8f7b5d28a5783e9cc3a9572c37080bcb3..eedfeb600b0e8f9e127034a32682eb62113f0e1c 100644
--- a/chrome/browser/ui/webui/options/language_options_browsertest.js
+++ b/chrome/browser/ui/webui/options/language_options_browsertest.js
@@ -1,8 +1,6 @@
 // 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(['options_browsertest_base.js']);
 
 /**
  * TestFixture for language options WebUI testing.
@@ -12,7 +10,7 @@
 function LanguageOptionsWebUITest() {}
 
 LanguageOptionsWebUITest.prototype = {
-  __proto__: OptionsBrowsertestBase.prototype,
+  __proto__: testing.Test.prototype,
 
   /** @override */
   browsePreload: 'chrome://settings-frame/languages',