<!DOCTYPE html> <!-- webkit-test-runner [ internal:AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <style>
        body {
            margin: 0;
        }
        
        #scroller {
		    direction: rtl;
            overflow-x: scroll;
            margin: 10px;
            height: 300px;
            width: 300px;
        }
        
        .contents {
		    width: 200%;
		    height: 100%;
			background-image: linear-gradient(to right, green, green 50%, red 50%, red);
        }

        .scrollbar-hider {
            position: absolute;
            width: 300px;
            height: 16px;
            left: 10px;
            top: calc(310px - 16px);
            background-color: gray;
        }
    </style>
    <script>
        window.addEventListener('load', () => {
            scroller.scrollLeft = -300;
        }, false);
    </script>
</head>
<body>
    <div id="scroller">
        <div class="contents"></div>
    </div>
    <div class="scrollbar-hider"></div>
</body>
</html>