<!DOCTYPE html>
<html>
<head>
<script>
if (window.internals) {
    internals.settings.setUserInterfaceDirectionPolicy("System");
    internals.settings.setSystemLayoutDirection("RTL");
}
</script>
<script>
if (window.internals)
    internals.setUsesOverlayScrollbars(true);
</script>
</head>
<body style="margin: 0px;">
This test makes sure that overlay scrollbars don't push contents over.
<div style="width: 370px; height: 400px; overflow: hidden">
<div style="width: 400px; height: 400px; overflow-x: hidden; overflow-y: auto; position: relative; left: -15px; background: blue;">
<div style="background: green;">This is some text and each pixel should match exactly.</div>
</div>
</div>
</body>
</html>