tree 28dd9da21ee6c6e2091f3cb884d292f8e5c61c63
parent 80d1ca5600807b5b9add6dee052719d52ca8c0df
author Daniel Rosenberg <drosen@google.com> 1539222724 -0700
committer Paul Lawrence <paullawrence@google.com> 1539720407 +0000

Switch to exceptions for most cp calls

This switches the checkpoint calls that don't need to return a value
to return 0 on success, and an error on failure. This will be transalted
to exceptions for java binder users. needsCheckpoint and needsRollback
still return a boolean value.

Test: vdc setCheckpoint 2 then reboot 3 times checking state
Bug: 112901762
Change-Id: Idd3b5e6036631562a86d5123f533b86cf3bd6032
Merged-In: Idd3b5e6036631562a86d5123f533b86cf3bd6032