| document.write inside onunload handler should not cause crash. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| iframe loaded successfully | |
| PASS "Done" is event.data | |
| iframe unloaded successfully | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |
| Test passes if it doesn't crash |