<!DOCTYPE html>
<html>
<head>
<style>
.scroller {
width: 300px;
height: 300px;
overflow: hidden;
-webkit-overflow-scrolling: touch;
}
.column {
width: 1000px;
height: 1000px;
background: silver;
}
</style>
<script>
if (window.testRunner)
testRunner.dumpAsText();
window.addEventListener('load', function() {
if (window.testRunner)
document.getElementById('layers').innerHTML = window.internals.layerTreeAsText(document);
}, true);
</script>
</head>
<body>
<div class="scroller">
<div class="column">
</div>
</div>
<pre id="layers">Layer tree goes here in DRT</pre>
</body>
</html>