tree d4f1df78f418119dede449b90871a3e76eb8bc44
parent 1a9e6a2ffcabbfea86beae4f3f6915639d37c5c1
author Michael Lentine <mlentine@google.com> 1431979441 -0700
committer Michael Lentine <mlentine@google.com> 1431980072 -0700

Adding a build id check to blob cache.

Add a build id field to the header structure in blob cache. Add build
id support with reading and writing the cache. When the cache gets
written it writes the build id at the end of the header. When read it
checks to see if there is a match between the current version and the
version in the cache. If not, it invalidates the cache which would
typically only occur during an ota update.  Also remove blob cache
from the host build.

bug: 18262905

Change-Id: I753b1de1986703a4c1c8691b9d2bb533b2546143