custom-scrollbar-inline-style-source.html

<!DOCTYPE html>
<style>
::-webkit-scrollbar {
  width: 0
}
body {
  width:2000px;
  height:2000px;
}
</style>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
async_test((t) => {
  setTimeout(() => {
    document.body.style.display = "inline";
    t.done();
  });
});
</script>

chromium/third_party/blink/web_tests/fast/scrolling/custom-scrollbar-inline-style-source.html