GitLab

Unified system tray has been launched and web notification has been moved
to the top of the system tray. The old system tray logic has been removed.
This cl removes the logic that swiping up on the status area tray to open
the corresponding bubble and swiping down on the tray bubble to close it.

cl that landed the feature:
https://codereview.chromium.org/2961313003/
cl that disabled the feature:
https://chromium-review.googlesource.com/c/chromium/src/+/674527/

Bug: 767679
Change-Id: Id81091360ee47c9763d2f716f246146b940ac1e2
Reviewed-on: https://chromium-review.googlesource.com/c/1334932Reviewed-by: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Commit-Queue: Min Chen <minch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608868}