GitLab

This reverts commit 4f6f29a2.

Reason for revert:
Speculative revert for possibly breaking BookmarkBubbleViewTest.SyncPromoNotSignedIn
https://ci.chromium.org/p/chromium/builders/ci/Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20%281%29/33302?blamelist=1

Original change's description:
> Native Theme support for System Tray Focus Rings
>   -> Set Native Theme for UnifiedSystemTrayView
>   -> Remove hardcoded transparency for all focus rings
>   -> Add transparency to default focus border color in common theme
> 
> Bug: 948959
> Change-Id: Ia4ee4315a894623ca9e5c20944972ce29714e2c3
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1597114
> Commit-Queue: Ahmed Mehfooz <amehfooz@chromium.org>
> Reviewed-by: Tim Song <tengs@chromium.org>
> Reviewed-by: Scott Violet <sky@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#658705}

TBR=sky@chromium.org,tengs@chromium.org,beccahughes@chromium.org,amehfooz@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 948959
Change-Id: I9c42c2c959cdaa63fcad61719e62a2036a905086
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1610860Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659236}