GitLab

This change adds a skeleton for a fake implementation of IDeviceWatcher.
No functionality is added yet, this will be done in a follow-up CL.

Bug: 821766
Change-Id: If51716beac17543975d42632b17c8af7f269ac5c
Reviewed-on: https://chromium-review.googlesource.com/1193890Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587531}