dom/base/crashtests/1341693.html


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<!DOCTYPE html>
<html>
<body>
<script>
  var o1 = document.documentElement;
  var o2 = document.createElement("frame");
  document.documentElement.appendChild(o2);
  var o3 = o2.contentWindow;
  o1.parentNode.removeChild(o1);
  o3.customElements;
</script>
</body>
</html>