composited-iframe-scroll-repaint-iframe.html

<!DOCTYPE html>
<html style="background-color:#eeeeee; overflow:scroll;">
<style>
::-webkit-scrollbar {
  display: none;
}
</style>
<script src="text-based-repaint.js"></script>
<script>
function repaintTest() {
  document.documentElement.scrollTop = 20;
}
</script>
<body onload="runRepaintTest()" style="will-change: transform;">
<div style="height:500px">

chromium/third_party/blink/web_tests/paint/invalidation/resources/composited-iframe-scroll-repaint-iframe.html