LayoutTests/fast/repaint/line-layout-block-shrink.html

<script src="resources/text-based-repaint.js"></script>
<style>
  img {
    height: 400px;
  }
</style>
<img id=changeThis>PASS if you see this text only once.
<script>
function repaintTest() {
    changeThis.style.height = "0px";
}
onload = runRepaintTest;
</script>