tree 0cae4fb21b0769cca98fb3f511a53a609e8fe3b6
parent 9ae5f7f85f10997e8a3af2e2afa27891c05fbac7
author Sen Jiang <senj@google.com> 1498695199 -0700
committer Sen Jiang <senj@google.com> 1508883103 -0700

Add maximum timestamp to the payload.

Added a new field max_timestamp in the protobuf, from now on
update_engine will reject any payload without this field.
If the OS build timestamp is newer than the max_timestamp, the payload
will also be rejected to prevent downgrade.

Bug: 36232423
Test: update_engine_unittests

Merged-In: Ib20f5f35aaf41165013bada02bc8720917358237
Change-Id: Ib20f5f35aaf41165013bada02bc8720917358237
(cherry picked from commit 5011df680621eb477cad8b34f03fba5b542cc2f9)