chromium/third_party/blink/web_tests/paint/invalidation/selection/repaint-rect-for-vertical-writing-mode-with-positioned-root.html

<!DOCTYPE html>
<script src="../resources/text-based-repaint.js"></script>
<style>
#test {
    position: absolute;
    left: 0px;
    top: 200px;
    -webkit-writing-mode: vertical-rl;
    width: 200px;
    height: 300px;
    border: 1px solid black;
    outline-style: none;
}
</style>
<script>
function repaintTest() {
    var testElement = document.getElementById("test");
    var selection = window.getSelection();
    selection.collapse(testElement, 1);
    selection.modify("Extend", "Forward", "Line");
}
</script>
<body onload="runRepaintAndPixelTest()">
<div id="test" contenteditable="true">
<div>Some text in vertical mode</div>
</div>
</body>