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chromium/third_party/blink/web_tests/paint/invalidation/overflow/inline-vertical-rl-overflow-expected.html 

<html style="-webkit-writing-mode:vertical-rl">
<body style="padding: 50px">
    <div><span id="target" style="font-family: Ahem; font-size: 50px; -webkit-text-stroke: 50px green;">A&nbsp;&nbsp;B</span></div>
</body>