chromium/third_party/blink/web_tests/paint/invalidation/flexbox/align-content-distribution-change-grid.html

<!DOCTYPE HTML>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
  document.getElementById('container').style.alignContent = 'stretch';
}
onload = runRepaintAndPixelTest;
</script>
<style>
body {
  margin: 0;
}
#container {
  display: grid;
  grid-auto-columns: 200px;
  grid-auto-rows: auto;
  grid-auto-flow: row;
  align-content: space-around;
  width: 200px;
  height: 300px;
  background-color: red;
}
.item {
  background-color: green;
}
</style>
<p style="height: 20px">Tests invalidation on align-content style change (distribution). Passes if there is no red.</p>
<div id="container">
  <div class="item">
    <div style="height: 50px"></div>
  </div>
  <div class="item">
    <div style="height: 50px"></div>
  </div>
  <div class="item">
    <div style="height: 50px"></div>
  </div>
</div>