chromium/third_party/blink/web_tests/paint/invalidation/compositing/scroll-fixed-squahed-layer.html

<!DOCTYPE html>
<html>
<head>
<script src="../resources/text-based-repaint.js"></script>
<style>
.main {
    position: fixed;
    top: 100px;
    left: 100px;
    width: 200px;
    height: 200px;
    background-color: lightblue;
    will-change: transform;
}

.squahed {
    position: fixed;
    top: 150px;
    left: 100px;
    width: 200px;
    height: 200px;
    background-color: lightgreen;
}
</style>
<script>
if (window.internals)
    internals.settings.setPreferCompositingToLCDTextEnabled(false);

function repaintTest() {
    window.scrollTo(0, 100);
}
</script>
</head>
<body style="height:2000px" onload="runRepaintAndPixelTest()">
<div class="main"></div>
<div class="squahed"></div>
</body>
</html>