<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<html>
<style>
.scroll { position:absolute; width:200px; height:200px; overflow:scroll }
.scrollcontent {  width:500px; height:500px; background:green; }
.overlap { position:absolute; width:100px; height:100px; background:blue; touch-action: none; }
</style>
<body>
<div class="scroll"><div class="scrollcontent"></div></div>
<div class="overlap">
    <div class="overlap" style="left:50px; top:50px"></div>
</div>
<pre id="results"></pre>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
if (window.internals)
    results.innerText = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_EVENT_REGION);
</script>
</body>
</html>