| Index: LayoutTests/fast/dom/partial-layout-overlay-scrollbars.html
 | 
| diff --git a/LayoutTests/fast/dom/partial-layout-overlay-scrollbars.html b/LayoutTests/fast/dom/partial-layout-overlay-scrollbars.html
 | 
| new file mode 100644
 | 
| index 0000000000000000000000000000000000000000..ec2029f9f9d0ed861cde393409c180a682dc05d4
 | 
| --- /dev/null
 | 
| +++ b/LayoutTests/fast/dom/partial-layout-overlay-scrollbars.html
 | 
| @@ -0,0 +1,42 @@
 | 
| +<!DOCTYPE HTML>
 | 
| +<html>
 | 
| +<script src="../../resources/testharness.js"></script>
 | 
| +<script src="../../resources/testharnessreport.js"></script>
 | 
| +<link rel="stylesheet" href="../../resources/testharness.css">
 | 
| +<head>
 | 
| +<style>
 | 
| +* {
 | 
| +    margin: 0;
 | 
| +    padding: 0;
 | 
| +}
 | 
| +
 | 
| +#makespace {
 | 
| +    height: 5000px;
 | 
| +}
 | 
| +</style>
 | 
| +</head>
 | 
| +<body>
 | 
| +<div id="makespace"></div>
 | 
| +<div id="measure"></div>
 | 
| +<script>
 | 
| +    if (window.testRunner)
 | 
| +        testRunner.dumpAsText();
 | 
| +
 | 
| +    if (window.internals)
 | 
| +        window.internals.setUsesOverlayScrollbars(true);
 | 
| +
 | 
| +    var test = async_test("Test that partial layout works with overlay scrollbars.");
 | 
| +    setTimeout(function() {
 | 
| +        test.step(function() {
 | 
| +            var measure = document.getElementById('measure');
 | 
| +            var measureWidth = measure.offsetWidth; // Partial layout occurs here!
 | 
| +
 | 
| +            assert_equals(measureWidth, document.body.offsetWidth);
 | 
| +            assert_equals(measureWidth, window.innerWidth);
 | 
| +        });
 | 
| +
 | 
| +        test.done();
 | 
| +    }, 0);
 | 
| +</script>
 | 
| +</body>
 | 
| +</html>
 | 
| 
 |