chromium/content/test/data/accessibility/event/delete-subtree.html

<!--
@BLINK-ALLOW:offscreen
@BLINK-ALLOW:size=(0, 0)
@BLINK-ALLOW:clipsChildren*
@BLINK-ALLOW:unclippedSize=(50, 20)
@BLINK-ALLOW:pageSize=(50, 20)
@BLINK-ALLOW:pageSize=(1, 1)
@BLINK-ALLOW:pageSize=(50, 1)
-->
<!DOCTYPE html>
<div id="parent" aria-label="parent" role="article"
     style="position: absolute; width: 0; height: 0; overflow: visible">
  <div style="width:50px; height: 20px" aria-label="first child" role="checkbox">first child</div>
  <div style="width:50px; height: 20px" aria-label="second child" role="radio">second child</div>
</div>

<script>
  function go() {
    document.getElementById("parent").innerHTML = "<div role=button>new child</div>";
  }
</script>