<!doctype html>
<style>
#container {
display: inline;
}
.target {
position: relative;
float: left;
top: 10px;
left: 10px;
}
.target:after {
position: absolute;
content: 'foo';
}
</style>
<p>crbug.com/454824: Don't mark ancestors for layout during positioned movement layout. This test should not assert. </p>
<div id="container">
<div id="target1" class="target"></div>
</div>
<script>
if (window.testRunner)
testRunner.dumpAsText();
document.body.offsetTop;
var div = document.querySelector('#target1');
div.style.left = '100px';
div.style.top = '100px';
</script>