<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <title>Tests the bounds of the clipping layer for nested clips in non-stacking context overflow</title>
    <style>
        #scroller {
            overflow-y: scroll;
            height: 300px;
            width: 300px;
            margin: 20px;
            border: 13px solid black;
            box-shadow: 0 0 7px black;
            padding: 8px;
        }
        
        .clipping {
            position: relative; /* keep it in a layer */
            overflow: hidden;
            border: 2px solid gray;
            margin: 10px;
            width: 200px;
            height: 100px;
        }
        
        .clipping.changed {
            overflow: visible;
        }
        
        .box {
            margin-top: 50px;
            margin-left: 30px;
            width: 100px;
            height: 100px;
            background-color: blue;
        }
        
        .composited {
            transform: translateZ(0);
            box-shadow: 0 0 4px black;
        }

        .spacer {
            height: 200px;
            width: 20px;
            background-color: silver;
        }
    </style>
    <script>
        if (window.testRunner) {
            testRunner.waitUntilDone();
            testRunner.dumpAsText();
        }

        window.addEventListener('load', () => {
            scroller.scrollTo(0, 50);
            
            setTimeout(() => {
                document.getElementById('target').classList.add('changed');
                if (window.internals)
                    document.getElementById('layers').innerText = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_CLIPPING);

                if (window.testRunner)
                    testRunner.notifyDone();
            }, 0);
        }, false);
    </script>
</head>
<body>
    <div id="scroller">
        <div class="spacer"></div>
        <div id="target" class="clipping">
            <div class="composited box"></div>
        </div>
        <div class="spacer"></div>
    </div>
<pre id="layers"></pre>
</body>
</html>