Remove e.initServiceWorkerMessageEvent() and e.initExtendableMessageEvent() methods. Fixes #701.
Remove e.initServiceWorkerMessageEvent() and e.initExtendableMessageEvent() methods. Fixes #701.

martinthomson/ServiceWorker,zuzusik/ServiceWorker,martinthomson/ServiceWorker,zuzusik/ServiceWorker,chadoliver/ServiceWorker,mkruisselbrink/ServiceWorker,chadoliver/ServiceWorker,slightlyoff/ServiceWorker,chadoliver/ServiceWorker,justinleoye/ServiceWorker,mkruisselbrink/ServiceWorker,justinleoye/ServiceWorker,slightlyoff/ServiceWorker,martinthomson/ServiceWorker,justinleoye/ServiceWorker,zuzusik/ServiceWorker