<!DOCTYPE html>
<div id="target"
     style="width: 100px; height: 100px; background: blue;
            clip-path: polygon(0% 100%, 100% 50%, 0% 0%, 0% 100%">
</div>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
  target.style.width = '200px';
}
onload = runRepaintAndPixelTest;
</script>