GitLab

As nearby shared files are added to the model, show the item chips in
the holding space tray.
The recently nearby shared files will show on the Downloads section and
will be treated as regular downloads.

Bug: 1130625
Change-Id: I082f46945138e487bb926c019a404af31b6871a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2514774Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Commit-Queue: Ana Salazar <anasalazar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823824}