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chromium/third_party/blink/web_tests/paint/invalidation/move-caret-in-container-change-paint-offset-keep-visual-expected.html 

<!DOCTYPE html>
<div id="editable" contenteditable="true"
    style="outline: none; position: absolute; top: 210px; left: 110px; width: 100px">ABCDE</div>
<script>
onload = function() {
  editable.focus();
  getSelection().collapse(editable.firstChild, 4);
};
</script>