stk@ could you PTAL.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d21e3816b10d22501455fea1468d56df514ea442

commit d21e3816b10d22501455fea1468d56df514ea442
Author: stkhapugin@chromium.org <stkhapugin@chromium.org>
Date: Tue Mar 13 16:11:30 2018

Defocus the omnibox when switching tabs.

CL 905511 introduced a bug where previously BVC was defocusing the
omnibox by sending selectedTabChanged to the toolbar, but this was
broken.

Since the location bar now directly observes the webstate with its
mediator, use this to defocus omnibox when the webstate changes.

Bug:  813944 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Ibc67faaae115032e0a3c6e6b5e3879d7e52f8f0f
Reviewed-on: https://chromium-review.googlesource.com/960663
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542817}
[modify] https://crrev.com/d21e3816b10d22501455fea1468d56df514ea442/ios/chrome/browser/ui/location_bar/location_bar_consumer.h
[modify] https://crrev.com/d21e3816b10d22501455fea1468d56df514ea442/ios/chrome/browser/ui/location_bar/location_bar_coordinator.mm
[modify] https://crrev.com/d21e3816b10d22501455fea1468d56df514ea442/ios/chrome/browser/ui/location_bar/location_bar_mediator.mm
[modify] https://crrev.com/d21e3816b10d22501455fea1468d56df514ea442/ios/chrome/browser/ui/location_bar/location_bar_mediator_unittest.mm

This should fix it, please check on latest canary. Once verified, this should be cherry-picked.

[Auto-generated comment by a script] We noticed that this issue is targeted for M-66; 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-66 label, otherwise remove Merge-TBD label. Thanks.

Verified in:

App Version: 67.0.3370.0 canary
iOS Versions: 10.3.3, 11.3 beta 5
Devices: iPads ONLY

Issue is fixed. Copied URL is not in the omnibox when subsequent new tabs are opened.

Video:
https://drive.google.com/open?id=127ssM-c5NrFjlFEFucO0IdtagT2vHLNq

Please request merge approval

This bug requires manual review: Less than 28 days to go before AppStore submit on M66
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), josafat@(ChromeOS), abdulsyed@(Desktop)

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

Friendly ping

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

Thanks for your time! To disable nags, add the Disable-Nags label.

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/15390e2936840c67c4b4b1706c3a0aaa0131aac4

commit 15390e2936840c67c4b4b1706c3a0aaa0131aac4
Author: stkhapugin@chromium.org <stkhapugin@chromium.org>
Date: Fri Mar 23 18:13:49 2018

Defocus the omnibox when switching tabs.

CL 905511 introduced a bug where previously BVC was defocusing the
omnibox by sending selectedTabChanged to the toolbar, but this was
broken.

Since the location bar now directly observes the webstate with its
mediator, use this to defocus omnibox when the webstate changes.

Bug:  813944 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Ibc67faaae115032e0a3c6e6b5e3879d7e52f8f0f
Reviewed-on: https://chromium-review.googlesource.com/960663
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#542817}(cherry picked from commit d21e3816b10d22501455fea1468d56df514ea442)
Reviewed-on: https://chromium-review.googlesource.com/978187
Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/branch-heads/3359@{#403}
Cr-Branched-From: 66afc5e5d10127546cc4b98b9117aff588b5e66b-refs/heads/master@{#540276}
[modify] https://crrev.com/15390e2936840c67c4b4b1706c3a0aaa0131aac4/ios/chrome/browser/ui/location_bar/location_bar_consumer.h
[modify] https://crrev.com/15390e2936840c67c4b4b1706c3a0aaa0131aac4/ios/chrome/browser/ui/location_bar/location_bar_coordinator.mm
[modify] https://crrev.com/15390e2936840c67c4b4b1706c3a0aaa0131aac4/ios/chrome/browser/ui/location_bar/location_bar_mediator.mm
[modify] https://crrev.com/15390e2936840c67c4b4b1706c3a0aaa0131aac4/ios/chrome/browser/ui/location_bar/location_bar_mediator_unittest.mm

Verified on chrome beta version 66.0.3359.63 on iPad Pro 11.2.6, iPad Mini with iOS 10.3.3 following steps mentioned comment #0.  Copied website is not displayed in new tabs opened.  Looks good.