chromium/third_party/blink/web_tests/fast/canvas/canvas-before-css-expected.html

<html>
<head>
    <link rel="stylesheet" href="about:blank" type="text/css">
</head>
<body>
    <p>If the canvas below is black, then we managed to draw before loading stylesheets. Hooray!</p>
    <div style="width:400px; height:200px; background-color:black;"></div>
</body>
</html>