GitLab

- Phonehub will now be hidden in lockscreen, preventing notifications
  and controls from appearing in the lockscreen.
- A followup CL will handle the suspend state of the Chrome OS device.

Bug: 1139415, 1106937
Test: chromeos_components_unittest, ash_unittests
Change-Id: Ie06dc84e22db98032e4f1479f4db5e4df0c1290d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2516248Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Jimmy Gong <jimmyxgong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825030}