File: paint-order-with-transform-change.html

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<!DOCTYPE html>
<html class="reftest-wait">
<title>Changes to transform should not affect paint order</title>
<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
<link rel="help" href="https://crbug.com/1267689">
<link rel="match" href="paint-order-with-transform-change-ref.html">
<style>
  #bottom {
    will-change: transform;
    position: absolute;
    top: 0;
    left: 100px;
    width: 100px;
    height: 100px;
    background: red;
  }
  #top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100px;
    height: 100px;
    background: green;
  }
</style>
<div id="bottom"></div>
<div id="top"></div>
<script>
requestAnimationFrame(() => {
  requestAnimationFrame(() => {
    bottom.style.transform = 'translate(-100px, 0px)';
    document.documentElement.removeAttribute('class');
  });
});
</script>