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chromium/third_party/blink/web_tests/paint/invalidation/compositing/absolute-to-static-with-clip.html 

<!DOCTYPE html>
<div id="clipper" style="position: absolute; width: 100px; height: 100px;
    background-color: green; clip: rect(25px 75px 75px 25px)">
</div>
<script src="../../../resources/run-after-layout-and-paint.js"></script>
<script>
runAfterLayoutAndPaint(function() {
  clipper.style.position = 'static';
}, true);
</script>