tree 8febc27005b1b003a53a0f30f620a0d8277468a9
parent 8daa3247249c5cd71ae920ef6808dd0224ef42e7
author Darin Petkov <petkov@chromium.org> 1288049698 -0700
committer Darin Petkov <petkov@chromium.org> 1288049698 -0700

AU: Implement switching of tracks through SetTrack.

On official images, update engine allows updating the track
only to dev-channel or beta-channel. The track is verified
both at setting and at getting time.

BUG=8104
TEST=unit test; tested on device

Change-Id: Ic81d4e3a9e09554d2239ee5c7a6c78e4dfe30d19

Review URL: http://codereview.chromium.org/4103002