Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/paint/invalidation/scroll/composited-add-resizer.html 

<!DOCTYPE html>
<script src=../resources/text-based-repaint.js></script>
<script>
function repaintTest() {
  target.style.resize = 'both';
}
onload = runRepaintAndPixelTest;
</script>
<div id='target' style="width: 100px; height: 100px; overflow: scroll; will-change: transform"></div>