[Media Router WebUI] Resolve AX_ARIA_08 failure.

chrome/test/data/webui/media_router/media_router_elements_browsertest.js

 // Copyright 2015 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.
 
 /** @fileoverview Runs the Media Router Polymer elements tests. */
 
 /** @const {string} Path to source root. */
 var ROOT_PATH = '../../../../../';
 
 // Polymer BrowserTest fixture.
@@ skipping 46 matching lines @@
     // Enable when failure is resolved.
     // AX_ARIA_02: http://crbug.com/591547
     this.accessibilityAuditConfig.ignoreSelectors(
         'nonExistentAriaRelatedElement', '#input');
 
     // Enable when failure is resolved.
     // AX_ARIA_04: http://crbug.com/591550
     this.accessibilityAuditConfig.ignoreSelectors(
         'badAriaAttributeValue', '#input');
 
-    var requiredOwnedAriaRoleMissingSelectors = [
-      '#cast-mode-list',
-      '#sink-list'
-    ];
-
-    // Enable when failure is resolved.
-    // AX_ARIA_08: http://crbug.com/591552
-    this.accessibilityAuditConfig.ignoreSelectors(
-        'requiredOwnedAriaRoleMissing', requiredOwnedAriaRoleMissingSelectors);
-
     // This element is used as a focus placeholder on dialog open, then
     // deleted. The user will be unable to tab to it. Remove when there is a
     // long term fix.
     this.accessibilityAuditConfig.ignoreSelectors(
        'focusableElementNotVisibleAndNotAriaHidden', '#focus-placeholder');
   },
 };
 
 TEST_F('MediaRouterElementsBrowserTest', 'IssueBanner', function() {
   issue_banner.registerTests();
@@ skipping 46 matching lines @@
     'MediaRouterSearchHighlighter',
     function() {
   media_router_search_highlighter.registerTests();
   mocha.run();
 });
 
 TEST_F('MediaRouterElementsBrowserTest', 'MediaRouterRouteDetails', function() {
   route_details.registerTests();
   mocha.run();
 });