<html>
<style>
.testdiv {
    display: inline-block;
    border: 2px solid blue;
    position: relative;
    height: 200px;
    width: 200px;
    background-color: blue;
    will-change: transform;
}
.inner {
    height: 50px;
    width: 50px;
    background-color: green;
}
.positioned {
    position: absolute;
    left: 150px;
    top: 150px;
}
</style>
<script>
window.onload = function () {
    if (!window.internals)
        return;
    if (window.testRunner)
        testRunner.dumpAsText();

    document.body.offsetLeft;

    test2.style.visibility = 'visible';
    test4.style.visibility = 'visible';

    results.innerText += internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_EVENT_REGION);
}
</script>
<body>
<div class="testdiv" style="visibility:hidden">
    <div class="inner" style="visibility:visible"></div>
</div>
<div class="testdiv" style="visibility:hidden">
    <div class="inner" id="test2"></div>
</div>
<div class="testdiv" style="visibility:hidden">
    <div class="inner positioned" style="visibility:visible"></div>
</div>
<div class="testdiv" style="visibility:hidden">
    <div class="inner positioned" id="test4"></div>
</div>
<pre id="results"></pre>
</body>
</html>