<!DOCTYPE html> <!-- webkit-test-runner [ internal:AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <style>
        .scroller {
            overflow: scroll;
            width: 300px;
            height: 300px;
            border: 2px solid black;
        }
        
        .relative {
            position: relative;
            margin: 200px 20px 0 10px;
            padding: 10px;
            height: 100px;
            border: 4px solid green;
            background-color: silver;
        }
        
        .spacer {
            height: 400px;
        }

        .scrollbar-hider {
            position: absolute;
            width: 16px;
            height: 300px;
            top: 10px;
            left: calc(310px - 16px);
            background-color: gray;
        }
    </style>
    <script>
        if (window.testRunner)
            testRunner.waitUntilDone();

        window.addEventListener('load', () => {
            setTimeout(() => {
                document.getElementById('scroller').scrollTop = 200;
                if (window.testRunner)
                    testRunner.notifyDone();
            }, 0);
        }, false);
    </script>
</head>
<body>
    <div id="scroller" class="scroller">
            <div class="relative">
                Relative foreground
            </div>
            <div class="spacer"></div>
        </div>
    </div>
    <div class="scrollbar-hider"></div>
</body>
</html>