tree cac22eda9f7813d2497a13b515752549aed44f38
parent 7d9c73fb6f6f79f7f92b77482a0edbd7b89f2564
author Jonas Schwertfeger <jschwertfeger@gmail.com> 1285848249 +0200
committer Jonas Schwertfeger <jschwertfeger@gmail.com> 1285848249 +0200

Added noop unregisterReceiver to complement existing noop registerReceiver.

Without this addition, code that is being tested using an isolated context
can cause an exception if it unregisters a previously registered broadcast
receiver.  This is because the isolated context never actually registered
the receiver in the first place.  The fix is to make sure the isolated
context is consistent in ignoring both recevier registration and
unregistration calls.

Change-Id: Ie0ba6f4bb10f5248704327a0ffc8e37ee8b71ae2