MD-Settings A11y: Disable radio list if all options are disabled.

chrome/browser/resources/settings/people_page/sync_page.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.
 
 (function() {
 
 /**
  * Names of the radio buttons which allow the user to choose their encryption
  * mechanism.
  * @enum {string}
@@ skipping 414 matching lines @@
   /**
    * @param {!Event} event
    * @private
    */
   onLearnMoreTap_: function(event) {
     if (event.target.tagName == 'A') {
       // Stop the propagation of events, so that clicking on links inside
       // checkboxes or radio buttons won't change the value.
       event.stopPropagation();
     }
-  }
+  },
 });
 
 })();