webkit-box-vertical-writing-mode.html

<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/">
<link rel="match" href="webkit-box-vertical-writing-mode-ref.html">
<div style="display: -webkit-box; writing-mode: vertical-rl;">
  This text should be vertical.
</div>

chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/webkit-box-vertical-writing-mode.html