chromium/content/test/data/accessibility/regression/aria-owns-reparent-above-other-change-crash.html

<!--
@WAIT-FOR:done
-->
<main>
  <div role="treeitem" id="root">
    <div role="group" id="container"></div>
    <div role="treeitem" id="child">
      <p id="inner">
        <mark>
          cats
        </mark>
      </p>
    </div>
  </div>
</main>

<script>
document.addEventListener('DOMContentLoaded', () => {
  // Force the first serialization.
  requestAnimationFrame(() => {
    requestAnimationFrame(() => {
      // Mark the descendant dirty.
      document.querySelector('mark').ariaLive = 'polite';
      // Causing a reparenting on an ancestor of the change.
      document.querySelector('#container').setAttribute('aria-owns', 'child');
      requestAnimationFrame(() => {
        requestAnimationFrame(() => {
          document.title = 'done';
        });
      });
    });
  });
});
</script>