chromium/content/test/data/accessibility/aria/aria-menuitemcheckbox.html

<!--
@MAC-ALLOW:AXRoleDescription
@MAC-ALLOW:AXValue
@WIN-ALLOW:checkable:*
@WIN-ALLOW:CHECKED*
@WIN-ALLOW:ia2_hypertext=*
@WIN-ALLOW:MIXED*
@WIN-ALLOW:xml-roles:*
@AURALINUX-ALLOW:checkable:*
@AURALINUX-DENY:checkable
@AURALINUX-ALLOW:checked
@AURALINUX-ALLOW:indeterminate
-->
<html>
<body>
  <div role="menu">
    <div role="menuitemcheckbox">Menu item 1</div>
    <div role="menuitemcheckbox" aria-checked="true">Menu item 2</div>
    <div role="menuitemcheckbox" aria-checked="mixed">Menu item 3</div>
  </div>
</body>
</html>