Test IndexedDB's event interfaces.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS 'IDBVersionChangeEvent' in self is true
PASS 'oldVersion' in document.createEvent('IDBVersionChangeEvent') is true
PASS 'newVersion' in document.createEvent('IDBVersionChangeEvent') is true
PASS 'dataLoss' in document.createEvent('IDBVersionChangeEvent') is true
PASS successfullyParsed is true
TEST COMPLETE