chromium/third_party/blink/web_tests/fast/block/float/assert-when-moving-float.html

<div style="width: 5px;">
  <img id="makeTaller" style="height: 50px; width: 1px"><img id="removeThis" style="width: 5px; height: 5px;">
  <div style="float: left; background-color: green;">foo</div>
  crbug.com/641334: Passes if it does not assert.
</div>
<script>
if (window.testRunner)
  testRunner.dumpAsText();
removeThis.offsetTop;
removeThis.parentNode.removeChild(removeThis);
makeTaller.style.height = '55px';
</script>