GitLab

This class exposes the notifications which have been synced from the
phone and provides APIs to dismiss notifications and send inline
replies. The functionality to add notifications to this class and to
implement dismissal/reply are not yet implemented.

This CL also simplifies some logic in FakePhoneHubManager to avoid
unnecessary unique_ptrs.

Bug: 1106937
Change-Id: I9cc743bbb85aea64fe47f839ffa6b631f88e4e54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2378774
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Regan Hsu <hsuregan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802080}