Disable AR HW when client binder dies.

Ensure that activities are unregistered from AR HW when the client's
binder dies. This clean up is required to prevent AR HW to keep active
when there are no clients listening for events.

Bug: 19894637
Change-Id: Iccd609cf1d2d4a4453c7a96cb8645b61639c3234
2 files changed