components/test/data/optimization_guide/deep_sparse.html - chromium/src - Git at Google

 <html>
 <body>Page with deep tree</body>
 <script>
   var node = document.body;
   for(let i = 0; i < 202; i++) {
     node = node.appendChild(document.createElement('div'));
     if(i%2) node.style.position = 'fixed';
     node.appendChild(document.createTextNode('text'));
   }
 </script>
 </html>
	<html>
	<body>Page with deep tree</body>
	<script>
	var node = document.body;
	for(let i = 0; i < 202; i++) {
	node = node.appendChild(document.createElement('div'));
	if(i%2) node.style.position = 'fixed';
	node.appendChild(document.createTextNode('text'));
	}
	</script>
	</html>