| Index: third_party/WebKit/LayoutTests/fast/compositorworker/compositor-proxy-disconnect-worker.html | 
| diff --git a/third_party/WebKit/LayoutTests/fast/compositorworker/compositor-proxy-disconnect-worker.html b/third_party/WebKit/LayoutTests/fast/compositorworker/compositor-proxy-disconnect-worker.html | 
| new file mode 100644 | 
| index 0000000000000000000000000000000000000000..2695b45df7b59c44165f4d8c225307ffcccda406 | 
| --- /dev/null | 
| +++ b/third_party/WebKit/LayoutTests/fast/compositorworker/compositor-proxy-disconnect-worker.html | 
| @@ -0,0 +1,19 @@ | 
| +<!DOCTYPE html> | 
| +<div id="container"></div> | 
| +<script src="../../resources/testharness.js"></script> | 
| +<script src="../../resources/testharnessreport.js"></script> | 
| +<script> | 
| + | 
| +var test = async_test(function() { | 
| +    function processMessage(event) { | 
| +        var message = event.data; | 
| +        assert_equals('NoModificationAllowedError', message); | 
| +        test.done(); | 
| +    } | 
| + | 
| +    var worker = new CompositorWorker('resources/proxy-disconnect.js'); | 
| +    worker.onmessage = processMessage; | 
| +    var proxy = new CompositorProxy(document.getElementById('container'), ['opacity']); | 
| +    worker.postMessage(proxy); | 
| +}, "This test checks that an element's compositor proxy cannot be mutated after disconnect()."); | 
| +</script> | 
|  |