Add Fields to App Struct

This CL adds optional fields to the app struct.

BUG=906508

Change-Id: I6fd79a95813d2c2d022c051de869b827178b251a
Reviewed-on: https://chromium-review.googlesource.com/c/1375192
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Reviewed-by: calamity <calamity@chromium.org>
Commit-Queue: Melissa Zhang <melzhang@google.com>
Cr-Commit-Position: refs/heads/master@{#616491}
2 files changed