GitLab

- Wire up SharingSyncPreference and LocalDeviceInfoProvider
- Added RefreshLocalDeviceInfo to update SharingInfo in sync

Bug: 991971
Change-Id: Ic03a9d3f276b37eebe1eebd4d3afb52b5d5644ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816503Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Alex Chau <alexchau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702950}