Revert of Disable many tests with flaky accessibility audits.

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

 // 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 testing the formatting of settings pages.
  * @extends {testing.Test}
  * @constructor
@@ skipping 114 matching lines @@
       if (filters[i] == target)
         return true;
     }
     return false;
   }
 };
 
 /**
  * Ensure that radio and checkbox buttons have consistent layout.
  */
-// TODO(crbug.com/657514) Flakes on linux and chromeos.
-GEN('#if defined(OS_LINUX) || defined(OS_CHROMEOS)');
-GEN('#define MAYBE_RadioCheckboxStyleCheck DISABLED_RadioCheckboxStyleCheck');
-GEN('#else');
-GEN('#define MAYBE_RadioCheckboxStyleCheck RadioCheckboxStyleCheck');
-GEN('#endif  // defined(OS_WIN)');
-TEST_F('SettingsFormatWebUITest', 'MAYBE_RadioCheckboxStyleCheck', function() {
+TEST_F('SettingsFormatWebUITest', 'RadioCheckboxStyleCheck', function() {
   var settings = $('settings');
   assertTrue(settings != null, 'Unable to access settings');
   var query = 'input[type=checkbox], input[type=radio]';
   var elements = document.querySelectorAll(query);
   assertTrue(elements.length > 0);
   for (var i = 0; i < elements.length; i++) {
     var element = elements[i];
     if (!findAncestorByClass(element, element.type))
       this.fail('MISSING_CHECK_WRAPPER', element, element.type);
   }
@@ skipping 21 matching lines @@
   var elements = document.querySelectorAll('input[type=radio]');
   for (var i = 0; i < elements.length; i++) {
     var element = elements[i];
     if (!element.name)
       this.fail('MISSING_RADIO_BUTTON_NAME', element);
 
     if (!element.getAttribute('value'))
       this.fail('MISSING_RADIO_BUTTON_VALUE', element);
   }
 });