tree 3f7097af403300329b1e3048b1faf2b39282b43d
parent 1bc16ab20eabba1785d2b99aa90494bbe7601740
author Darin Petkov <petkov@chromium.org> 1286407939 -0700
committer Darin Petkov <petkov@chromium.org> 1286407939 -0700

AU: Start checkpointing update progress.

Checkpoint the manifest metadata size and the update
check response hash in the preference store. Also checkpoint
the next operation and data offset.
Add methods for getting/setting hash context.

BUG=7390,7394
TEST=unit tests

Change-Id: I25291bf598ac9b0f1033e11cfe59df45b1f6eeab

Review URL: http://codereview.chromium.org/3521016