Fire window.onerror for uncaught IndexedDB errors

LayoutTests/storage/indexeddb/delete-in-upgradeneeded-close-in-versionchange-expected.txt

 Test that a deleteDatabase called while handling an upgradeneeded event is queued and fires its events at the right time. The close() call to unblock the delete occurs in the connection's 'versionchange' event handler.
 
 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 = "delete-in-upgradeneeded-close-in-versionchange.html"
 indexedDB.deleteDatabase(dbname)
 
@@ skipping 13 matching lines @@
 PASS event.oldVersion is 1
 PASS event.newVersion is null
 sawVersionChange = true
 Closing the connection before the IDBOpenDBRequest's success fires will cause the open to fail.
 db.close()
 
 deleteBlockedCallback():
 PASS sawVersionChange is true
 sawDeleteBlocked = true
 
+openError():
+PASS sawVersionChange is true
+sawOpenError = true
+
 deleteSuccessCallback():
-PASS sawVersionChange is true
+PASS sawOpenError is true
 FIXME: Blocked events shouldn't fire if connections close in versionchange handler. http://crbug.com/100123
 FAIL sawDeleteBlocked should be false. Was true.
 PASS sawUpgradeNeeded is true
 PASS successfullyParsed is true
 
 TEST COMPLETE