chromium/third_party/blink/web_tests/paint/invalidation/scale-page-shrink.html

<html>
<head>
<style>
    ::-webkit-scrollbar {
        width: 0px;
        height: 0px;
    }
</style>
<script type="text/javascript">
    function runTest()
    {
        if (window.internals) {
            internals.setPageScaleFactorLimits(0.25, 0.25);
            internals.setPageScaleFactor(0.25);
        }
    }
</script>
</head>

<body onload="runTest();" style="width: 4000px;">
    This test must be run in DumpRenderTree as a pixel test. There should not be visual aritfacts after scaling the page.
    <div style="width:500px; height:500px; background-color:green;"></div>
</body>
</html>