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chromium/third_party/blink/web_tests/paint/invalidation/compositing/composited-layer-move.html 

<!DOCTYPE html>
<script src="../resources/text-based-repaint.js"></script>
<div id="target" style="position: relative; width: 100px; height: 100px; will-change: transform; background: green">
</div>
<script>
function repaintTest() {
  target.style.left = '200px';
}
onload = runRepaintAndPixelTest;
</script>