Ensure that some obsolete IndexedDB features are gone. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB; dbname = "removed.html" PASS self.webkitIDBDatabaseError is undefined. PASS 'IDBDatabaseException' in self is false PASS 'errorCode' in indexedDB.open(dbname) is false PASS 'setVersion' in IDBDatabase.prototype is false PASS document.createEvent('IDBUpgradeNeededEvent') threw exception NotSupportedError (DOM Exception 9): The operation is not supported.. PASS 'version' in document.createEvent('IDBVersionChangeEvent') is false PASS successfullyParsed is true TEST COMPLETE