Findit identified the culprit r576358 with confidence 70.0% in the config "chromium.mac / Mac10.12 Tests"
based on the flakiness trend:

https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVyyQELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKSAWNocm9taXVtLm1hYy9NYWMxMC4xMiBUZXN0cy8xNDUzMS9pbnRlcmFjdGl2ZV91aV90ZXN0cyBvbiBJbnRlbCBHUFUgb24gTWFjIG9uIE1hYy0xMC4xMi42L1QyMXVhV0p2ZUZacFpYZFdhV1YzYzFSbGMzUXVVMlZzWldOMFFXeHNUMjVVWVdKVWIwWnZZM1Z6DAsSE01hc3RlckZsYWtlQW5hbHlzaXMYAQw

If the culprit above is wrong, please file a bug using this link and hit submit:
https://bugs.chromium.org/p/chromium/issues/entry?status=Unconfirmed&labels=Pri-1,Test-Findit-Wrong&components=Tools%3ETest%3EFindit%3EFlakiness&summary=%5BFindit%5D%20Flake%20Analyzer%20-%20Wrong%20result%20for%20OmniboxViewViewsTest.SelectAllOnTabToFocus&comment=Link%20to%20Analysis%3A%20https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVyyQELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKSAWNocm9taXVtLm1hYy9NYWMxMC4xMiBUZXN0cy8xNDUzMS9pbnRlcmFjdGl2ZV91aV90ZXN0cyBvbiBJbnRlbCBHUFUgb24gTWFjIG9uIE1hYy0xMC4xMi42L1QyMXVhV0p2ZUZacFpYZFdhV1YzYzFSbGMzUXVVMlZzWldOMFFXeHNUMjVVWVdKVWIwWnZZM1Z6DAsSE01hc3RlckZsYWtlQW5hbHlzaXMYAQw

Automatically posted by the findit-for-me app (https://goo.gl/Ot9f7N).

Reverting at https://chromium-review.googlesource.com/c/chromium/src/+/1146421

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e72294616387f89cb2036f962cc99f2d3a6ea05b

commit e72294616387f89cb2036f962cc99f2d3a6ea05b
Author: Timothy Loh <timloh@chromium.org>
Date: Mon Jul 23 04:55:19 2018

Revert "Match security chip visibility with focus ring"

This reverts commit 26399bca111241fe779fcbcfaf2047faac85deb6.

Reason for revert: OmniboxViewViewsTest.SelectAllOnTabToFocus is Flaky

Original change's description:
> Match security chip visibility with focus ring
> 
> Instantly hides or shows the IconLabelBubbleView separator when focus
> rings are available to prevent showing the separator when a focus ring
> overlaps it.
> 
> Bug:  chromium:865029 
> Change-Id: I21a4c296c1da06b81dc91d66101d46e8ad52ad99
> Reviewed-on: https://chromium-review.googlesource.com/1142442
> Commit-Queue: Peter Boström <pbos@chromium.org>
> Reviewed-by: Bret Sepulveda <bsep@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#576358}

TBR=pbos@chromium.org,bsep@chromium.org

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

Bug:  865029 ,  866230 
Change-Id: I30372e90c1613b33690b43dd28fbe151abddddef
Reviewed-on: https://chromium-review.googlesource.com/1146421
Reviewed-by: Timothy Loh <timloh@chromium.org>
Commit-Queue: Timothy Loh <timloh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577110}
[modify] https://crrev.com/e72294616387f89cb2036f962cc99f2d3a6ea05b/chrome/browser/ui/views/location_bar/icon_label_bubble_view.cc
[modify] https://crrev.com/e72294616387f89cb2036f962cc99f2d3a6ea05b/chrome/browser/ui/views/location_bar/icon_label_bubble_view.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3c83f323d614760aba156aece59a9ac53864c78b

commit 3c83f323d614760aba156aece59a9ac53864c78b
Author: Timothy Loh <timloh@chromium.org>
Date: Mon Jul 23 18:28:45 2018

Revert "Match security chip visibility with focus ring"

This reverts commit 26399bca111241fe779fcbcfaf2047faac85deb6.

Reason for revert: OmniboxViewViewsTest.SelectAllOnTabToFocus is Flaky

Original change's description:
> Match security chip visibility with focus ring
>
> Instantly hides or shows the IconLabelBubbleView separator when focus
> rings are available to prevent showing the separator when a focus ring
> overlaps it.
>
> Bug:  chromium:865029 
> Change-Id: I21a4c296c1da06b81dc91d66101d46e8ad52ad99
> Reviewed-on: https://chromium-review.googlesource.com/1142442
> Commit-Queue: Peter Boström <pbos@chromium.org>
> Reviewed-by: Bret Sepulveda <bsep@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#576358}

TBR=pbos@chromium.org,bsep@chromium.org

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

Bug:  865029 ,  866230 
Change-Id: I30372e90c1613b33690b43dd28fbe151abddddef
Reviewed-on: https://chromium-review.googlesource.com/1146421
Reviewed-by: Timothy Loh <timloh@chromium.org>
Commit-Queue: Timothy Loh <timloh@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#577110}(cherry picked from commit e72294616387f89cb2036f962cc99f2d3a6ea05b)
Reviewed-on: https://chromium-review.googlesource.com/1147081
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/branch-heads/3497@{#17}
Cr-Branched-From: 271eaf50594eb818c9295dc78d364aea18c82ea8-refs/heads/master@{#576753}
[modify] https://crrev.com/3c83f323d614760aba156aece59a9ac53864c78b/chrome/browser/ui/views/location_bar/icon_label_bubble_view.cc
[modify] https://crrev.com/3c83f323d614760aba156aece59a9ac53864c78b/chrome/browser/ui/views/location_bar/icon_label_bubble_view.h