Ensure that `onerror` is available from AbstractWorker. Refs #97
Ensure that `onerror` is available from AbstractWorker. Refs #97

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