57 lines
1.4 KiB
HTML
57 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style>
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#resizing {
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width: 400px;
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border: 1px solid black;
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-webkit-transform: translateZ(0);
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}
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#resizing > div {
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height: 50px;
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margin: 1px;
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background-color: silver;
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}
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</style>
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<script>
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if (window.testRunner)
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testRunner.dumpAsText();
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function doTest()
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{
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// Force compositing update before changing layer size.
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if (window.internals)
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window.internals.layerTreeAsText(document);
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var resizingDiv = document.getElementById('resizing');
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for (var i = 0; i < 2; ++i) {
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var newDiv = document.createElement('div');
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resizingDiv.appendChild(newDiv);
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}
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if (window.internals)
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window.internals.startTrackingRepaints();
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for (var i = 0; i < 2; ++i) {
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var newDiv = document.createElement('div');
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resizingDiv.appendChild(newDiv);
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}
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if (window.internals)
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document.getElementById('layers').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
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}
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window.addEventListener('load', doTest, false);
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</script>
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</head>
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<body>
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<div id="resizing"></div>
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<pre id="layers"></pre>
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</body>
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</html>
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