Tests that DedicatedWorkerGlobalScope's prototype chain is correct.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
DedicatedWorkerGlobalScope.prototype.toString() === "[object DedicatedWorkerGlobalScope]": true
Object.getPrototypeOf(DedicatedWorkerGlobalScope.prototype) === WorkerGlobalScope.prototype: true
WorkerGlobalScope.prototype.toString() === "[object WorkerGlobalScope]": true
Object.getPrototypeOf(WorkerGlobalScope.prototype) === EventTarget.prototype: true
PASS successfullyParsed is true
TEST COMPLETE
