0c3154d3fc
Don't hold a lock when the activity thread is telling the activity manager to release a provider. This requires that the activity manager now keep a reference count on the providers, because without the lock it is possible for activity thread to call in to request the provider again before it has finished telling about the release. Change-Id: I5f912903891f4edae85e28819d4e6f14b8f2e688