Regression test to ensure that IndexedDB connections don't leak

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


dbname = "connection-leak.html"

doFirstOpen():
request = indexedDB.open(dbname, 1)
sawUpgradeNeeded1 = false

onUpgradeNeeded1():
sawUpgradeNeeded1 = true

onOpenSuccess1():
PASS sawUpgradeNeeded1 is true
db = request.result
db.close()

doSecondOpen():
request = indexedDB.open(dbname, 1)

onOpenSuccess2():
db = request.result
db = null
request = null
Run GC outside of request's callback via setTimeout()
window.gc()

doThirdOpen():
request = indexedDB.open(dbname, 2)
sawUpgradeNeeded3 = false

onUpgradeNeeded2():
sawUpgradeNeeded3 = true

onOpenSuccess3():
PASS sawUpgradeNeeded3 is true
db = request.result
db.close()
PASS successfullyParsed is true

TEST COMPLETE