History

Time	Change
2013-01-30 23:40:28+00:00	Created
2013-01-30 23:40:28+00:00	Associated with WorkerGlobalScope
2016-03-28 13:02:31+00:00	Associated with worker global scope
2016-03-28 13:02:31+00:00	Associated with ワーカー大域適用範囲
2016-03-28 13:02:31+00:00	Associated with ワーカー大域オブジェクト