chromium/third_party/blink/web_tests/compositing/overflow/body-switch-composited-scrolling-expected.html

<!DOCTYPE html>
<style>
html {
    overflow-y: scroll;
}

body {
    margin: 0;
    height: 1000px;
    background-color: yellow;
}
</style>
<body>
    The test passes if the contents scrolls correctly.
</body>
<script>
    window.scrollTo(0, 100);
</script>