no-overlay-scrollbars.html | Explore in Territory

<!DOCTYPE html>
<script>
  if (window.testRunner && window.internals) {
    testRunner.setPrinting();
    internals.useMockOverlayScrollbars();
  }
</script>
<div style="overflow: scroll; width: 200px; height: 200px; border: 2px solid black">
  <div style="width: 400px; height: 400px"></div>
</div>

chromium/third_party/blink/web_tests/printing/no-overlay-scrollbars.html