Revert of Enable a11y audit for chrome://settings

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

Index: chrome/browser/ui/webui/options/content_options_browsertest.js
diff --git a/chrome/browser/ui/webui/options/content_options_browsertest.js b/chrome/browser/ui/webui/options/content_options_browsertest.js
index 863fb28f88094f5b8e12692693a554a610834326..1c714053b188be7f1826ef2983d9f610149a245a 100644
--- a/chrome/browser/ui/webui/options/content_options_browsertest.js
+++ b/chrome/browser/ui/webui/options/content_options_browsertest.js
@@ -1,8 +1,6 @@
 // Copyright (c) 2012 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 content options WebUI testing.
@@ -12,11 +10,10 @@
 function ContentOptionsWebUITest() {}
 
 ContentOptionsWebUITest.prototype = {
-  __proto__: OptionsBrowsertestBase.prototype,
+  __proto__: testing.Test.prototype,
 
   /**
    * Browse to content options.
-   * @override
    */
   browsePreload: 'chrome://settings-frame/content',
 };