<html>
<script src="../../resources/js-test-pre.js"></script>
<script>
    jsTestIsAsync = true;
    if (window.internals) {
        window.internals.setUsesMockScrollAnimator(true);
        window.internals.setUsesOverlayScrollbars(true);
    }

    function runTest() {
        if (window.internals)
            internals.updateLayoutAndStyleForAllFrames();
        document.body.offsetHeight;
        if (window.eventSender) {
            eventSender.mouseMoveTo(0, 0);
            eventSender.mouseMoveTo(frame.offsetLeft + 4, frame.offsetTop + frame.offsetHeight - 4);
            eventSender.mouseMoveTo(0, 0);
        }
        finishJSTest();
    };
</script>
<script src="../../resources/js-test-post.js"></script>
<body>
  <p>Test for <a href="https://bugs.webkit.org/show_bug.cgi?id=153304">https://bugs.webkit.org/show_bug.cgi?id=153304</a>.</p>
  <iframe onload="runTest()" width=120 scrolling=yes id="frame" src="data:text/html,
      <p style='white-space: nowrap'>Scroll animator should be notified when overlay scrollbars in main frame are hovered</p>
      ">
  </iframe>
  <pre id="console"></pre>
</body>
</html>