composited-scroll-background-obscured.html

<!doctype HTML>
<div id="target" style="height: 100%; overflow-y:scroll; background-color: yellow; will-change: transform; width: 200px; height: 200px;">
  <div style="background: lightgray; width: 200px; height: 200px;"></div>
  <div style="width: 200px; height: 200px"></div>
</div>
<script>
// Test that scrolling to show the second contained div will show a yellow background (the backround of the scroller),
// since the second div has no box decorations.
target.scrollTop = 200;
</script>

chromium/third_party/blink/web_tests/compositing/overflow/composited-scroll-background-obscured.html