...can lead to launching of un-exported activities
We now validate the array map after unparcelling to make sure there
are no duplicate keys.
And to make up for the performance overhead this introduces, I switched
the parcelling/unparcelling code to write keys as explicit string
objects rather than generic values. There was no reason to use generic
values since the write method itself only accepts an array map with
String keys.
Change-Id: I57bda9eb79ceaaa9c1b94ad49d9e462b52102149
9c3e74f1f7