Adds test to confirm that Badge API calls reach the BadgeServiceDelegate

Bug: 719176
Change-Id: I4be4c30d5f565931d062081b070423476e6ed444
Reviewed-on: https://chromium-review.googlesource.com/c/1402381
Reviewed-by: Raymes Khoury <raymes@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Jay Harris <harrisjay@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621780}
3 files changed