<!DOCTYPE html>
<link rel="help" href="http://crbug.com/1383361">
<body style="columns:2">
<div id="parent" style="display:table-caption"></div>
<script>
const caption = document.querySelector('#parent');
const frameset = caption.appendChild(document.createElement('frameset'));
frameset.setAttribute('rows', '100%');
frameset.setAttribute('cols', '100%');
frameset.innerHTML = '<frame srcdoc=""></frame><frame srcdoc=""></frame>';
</script>
</body>
