tree 449ca1323764d609b5fd3c3bd721a8e232726fc9
parent 35b3584ab4041aa32e1d049bd6ddff5941b03df2
author Sen Jiang <senj@google.com> 1444237532 -0700
committer Sen Jiang <senj@google.com> 1445376562 -0700

PayloadVerifier should not depend on DeltaPerformer to load payload.

The implementation in DeltaPerformer is designed for situation that payload
might only partially available, but in PayloadVerifier we already have the
whole payload. So I implemented LoadPayload in PayloadSigner which logic is
simpler and supports both version 1 and 2.

VerifySignedPayload is also moved to PayloadSigner since it's not used in
update engine daemon.
This patch also fixed wrong metadata size out in version 2 and misspelling
of metadata in WritePayload in PayloadFile.

Bug: 23981164
TEST=unit test added.

Change-Id: Id1917fc891dbf2075978a273d1a4ee3c4ecf0571