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chromium/third_party/blink/web_tests/media/video-floated-controls-crash.html 

<!DOCTYPE html>
<video width="200" height="200" controls src="whatever"></video>
<style></style>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script>
  test(()=> {
    document.body.offsetTop;
    var sheet = document.styleSheets[0];
    sheet.insertRule("::-webkit-media-controls { float: left; }");

    /* Trigger re-layout of something on the inside of the video AND something
       on the outside. */
    document.body.offsetTop;
    sheet.insertRule("::-webkit-media-controls-enclosure { width: 333px; }");
    document.body.style.width = "333px";
  }, "No crash");
</script>