Able to reproduce the issue on Ubuntu 14.04 using chrome latest Dev M56-56.0.2920.0. This issue is working fine on Mac OS.

Thanks!

Issue is not seen in Windows 56.0.2920.0 dev.

Manual Bisect Range:
========================
Good build: 56.0.2902.0 
Bad build: 56.0.2903.0 

Bisect Information:
------------------------
You are probably looking for a change made after 428155 (known good), but no later than 428157 (first known bad).

CHANGELOG URL:
----------------
https://chromium.googlesource.com/chromium/src/+log/e0e3af8004e7f656ae8e1cb45c76a4a013c43961..c5e551b4da8b4bf7cc8fcfbdff3a052f19619bf3

From the CL above, assigning the issue to the concern owner 

@warx - Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/34ce9a4718f571b8f8ee0f95b6d153aff38223db

commit 34ce9a4718f571b8f8ee0f95b6d153aff38223db
Author: warx <warx@chromium.org>
Date: Mon Nov 21 23:57:27 2016

Fix unable to delete extensions continuously through keyboard

Changes:
(1) revert the cl in Issue 2451323002.
(2) using a different approach, which is to avoid restorefocusedview call if desktopnativewidget is not active (since that should be handled in HandleActivationChanged call).

BUG= 665380 
TEST=manual test see bug fixed.
Also, this reverts the cl in Issue 2451323002, checked that the bug in that issue is not regressed.

Review-Url: https://codereview.chromium.org/2517663002
Cr-Commit-Position: refs/heads/master@{#433706}

[modify] https://crrev.com/34ce9a4718f571b8f8ee0f95b6d153aff38223db/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
[modify] https://crrev.com/34ce9a4718f571b8f8ee0f95b6d153aff38223db/ui/views/widget/desktop_aura/desktop_native_widget_aura.h

[Auto-generated comment by a script] We noticed that this issue is targeted for M-56; it appears the fix may have landed after branch point, meaning a merge might be required. Please confirm if a merge is required here - if so add Merge-Request-56 label, otherwise remove Merge-TBD label. Thanks.

Your change meets the bar and is auto-approved for M56 (branch: 2924)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a4466cde03858e1e1754c9498e7aad4c1ea9c251

commit a4466cde03858e1e1754c9498e7aad4c1ea9c251
Author: Qiang Xu <warx@chromium.org>
Date: Tue Nov 22 23:27:09 2016

[Merge to 2924] Fix unable to delete extensions continuously through keyboard

Changes:
(1) revert the cl in Issue 2451323002.
(2) using a different approach, which is to avoid restorefocusedview call if desktopnativewidget is not active (since that should be handled in HandleActivationChanged call).

BUG= 665380 
TBR=sky@chromium.org
TEST=manual test see bug fixed.
Also, this reverts the cl in Issue 2451323002, checked that the bug in that issue is not regressed.

Review-Url: https://codereview.chromium.org/2517663002
Cr-Commit-Position: refs/heads/master@{#433706}
(cherry picked from commit 34ce9a4718f571b8f8ee0f95b6d153aff38223db)

Review URL: https://codereview.chromium.org/2525823002 .

Cr-Commit-Position: refs/branch-heads/2924@{#67}
Cr-Branched-From: 3a87aecc31cd1ffe751dd72c04e5a96a1fc8108a-refs/heads/master@{#433059}

[modify] https://crrev.com/a4466cde03858e1e1754c9498e7aad4c1ea9c251/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
[modify] https://crrev.com/a4466cde03858e1e1754c9498e7aad4c1ea9c251/ui/views/widget/desktop_aura/desktop_native_widget_aura.h

Tested the fix on Linux Ubuntu 14.04 using chrome version 56.0.2924.10.Able to see the focus on next extension trash icon after deleting the extension.
Please find the attached screen cast for the same.

Adding TE-Verified labels.

Deleted: 665380.ogv 1.3 MB

	665380.ogv 1.3 MB View Download

Please confirm the behavior in#11 ,if there is no pending work please remove merge-TBD label.

Tested the issue on Chrome Dev# 57.0.2946.0 on Ubuntu 14.04 and observed that the issue is no more reproducible.
Focus shifts to the next extension after deletion. Hence adding TE-Verified Labels accordingly.
Attaching screen cast for reference.

Deleted: 665380.ogv 2.0 MB

	665380.ogv 2.0 MB View Download

This bug requires manual review: No test file found in commits.
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), gkihumba@(cros), bustamante@(desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

This bug requires manual review: No test file found in commits.
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), gkihumba@(cros), bustamante@(desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

[Automated comment] removing mislabelled Merge-Review-56, Hotlist-Merge-Review