Save and expose additional data about the previous application session.

Adds device thermal state, low power mode, and whether or not the OS was updated
between the previous and current session.

Bug: 965393
Change-Id: Ibb91efe391a10daa983aafe56e93a9d4e02fa114
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1621710
Commit-Queue: Mike Dougherty <michaeldo@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662714}
2 files changed