Includes creating Oddball-specific types.

Change-Id: Ib5d80dfe95838b2deb0a2fcae67c349940970252
Reviewed-on: https://chromium-review.googlesource.com/c/1342930Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57655}