Test SharedWorker onerror functionality. Prints multiple SUCCESS lines, then DONE when complete.
PASS: Received load error event: [object Event]
PASS: Received error event after worker GC'd: [object Event]
DONE
Test SharedWorker onerror functionality. Prints multiple SUCCESS lines, then DONE when complete.
PASS: Received load error event: [object Event]
PASS: Received error event after worker GC'd: [object Event]
DONE