chromium/content/test/data/accessibility/aria/aria-hidden-changed-on-buttons.html

<!--
@WAIT-FOR:done
-->
<div role="button" id="button1" tabindex="0">Button 1</div>
<div role="button" id="button2" tabindex="0" aria-hidden="true">Button 2</div>

<script>
document.addEventListener('DOMContentLoaded', () => {
  document.getElementById("button1").setAttribute('aria-hidden', 'true');
  document.getElementById("button2").setAttribute('aria-hidden', 'false');
  document.title="done";
});
</script>