GitLab

Hidden items:
 1. Ime menu tray
 2. Overview button tray
 3. Palette tray
 4. Logout buton tray
 5. Virtual keyboard tray

Bug: 948955
Change-Id: I8ade734877dfeb6ef45e6516c86384328a1d052f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1622366
Commit-Queue: Yilkal Abe <yilkal@chromium.org>
Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Reviewed-by: Aga Wronska <agawronska@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664803}