3 This test checks that when overlay scrollbars are repositioned due to
4 accelerated overflow scrolling, that their position accounts for any
5 intervening, composited ancestors. The test is working correctly if the
6 scrollbars are correctly positioned on top of the scroller and the scrolled
14 border: 1px solid black;
35 background: papayawhip;
38 -webkit-backface-visibility: hidden;
42 <div id="intervening">
44 <div id="fixed"></div>
45 <div class="scrolled"></div>
46 <div class="scrolled"></div>
47 <div class="scrolled"></div>
48 <div class="scrolled"></div>
52 if (window.internals) {
53 window.internals.settings.setOverlayScrollbarsEnabled(true);
54 window.internals.settings.setPreferCompositingToLCDTextEnabled(true);
57 if (window.testRunner)
58 window.testRunner.dumpAsTextWithPixelResults();
61 if (window.internals && window.testRunner)
62 window.testRunner.setCustomTextOutput(window.internals.layerTreeAsText(document));