frame-move-keep-content-location.html

<!DOCTYPE html>
<script src="../../resources/run-after-layout-and-paint.js"></script>
<script>
onload = function() {
  runAfterLayoutAndPaint(function() {
    var frame = document.getElementById('frame');
    var content = frame.contentDocument.getElementById('content');
    frame.style.top = '100px';
    content.style.top = '150px';
  }, true);
};
</script>
Tests paint offset adjustment of iframe content which is kept the original location when the iframe moves.
Passes if the blue block stays at the same place after repaint.
<iframe id="frame" style="position: absolute; top: 200px; width: 300px; height: 300px"
    srcdoc="<div id='content' style='position: absolute; top: 50px; width: 100px; height: 100px; background-color: blue'></div>">
</iframe>

chromium/third_party/blink/web_tests/paint/invalidation/frame-move-keep-content-location.html