chromium/src/third_party/blink/web_tests/compositing/squashing/squash-transformed-with-clip.html

<style>
#overlap {
  width: 10px;
  height: 100px;
  background: green;
  will-change: transform;
}
#transformed {
  position: absolute;
  left: 0;
  top: 0;
  overflow: hidden;
  transform: translate(0, 50px);
}
</style>
<div id="overlap"></div>
<div id="transformed">
  This test succeeds if this text is visible.
</div>
This test verifies squashed transformed elements have their ancestor clip and local clip applied in the correct spaces.