chromium/src/third_party/blink/renderer/core/testing/data/add_frame_in_unload.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <html>
 <script>
 function handleUnload()
 {
     var iframe = document.createElement('iframe');
     iframe.src = 'about:blank';
     document.body.appendChild(iframe);
 }
 </script>
 <body onunload="handleUnload()">
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<script>
	function handleUnload()
	{
	var iframe = document.createElement('iframe');
	iframe.src = 'about:blank';
	document.body.appendChild(iframe);
	}
	</script>
	<body onunload="handleUnload()">
	</body>
	</html>