LayoutTests/imported/blink/fast/dom/shadow/reattach-content-ancestor.html - WebKit - Git at Google

 <!DOCTYPE html>

 <div id="host">Should be visible.</div>

 <script>
     var host = document.getElementById('host');
     var root = host.createShadowRoot();
     root.innerHTML = "<div style='display: none'><content></content></div>";
     document.body.offsetTop;
     root.firstElementChild.style.display = 'block';
 </script>
	<!DOCTYPE html>

	<div id="host">Should be visible.</div>

	<script>
	var host = document.getElementById('host');
	var root = host.createShadowRoot();
	root.innerHTML = "<div style='display: none'><content></content></div>";
	document.body.offsetTop;
	root.firstElementChild.style.display = 'block';
	</script>