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chromium/third_party/blink/web_tests/paint/invalidation/box/border-radius-without-border.html 

<!DOCTYPE html>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest()
{
    document.getElementById('target1').style.width = '200px';
    document.getElementById('target2').style.height = '200px';
}
window.onload = runRepaintAndPixelTest;
</script>
<style>
body {
    margin: 0;
}
div {
    width: 100px;
    height: 100px;
    background-color: green;
    border-radius: 10px 15px 20px 25px;
    position: absolute;
}
</style>
<div id="target1" style="top: 0px"></div>
<div id="target2" style="top: 200px"></div>