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chromium/third_party/blink/web_tests/paint/invalidation/clip/subtree-root-clip-expected.html 

<!DOCTYPE HTML>
<html>
<body>
<div style="float: left; overflow: hidden; width: 100px; height: 100px; background-color: green;">
    <div id="inner" style="width: 0; height: 100px;"></div>
</div>
</body>
</html>