Is this related to QR code scanner?

Yes

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2199ed5089131580ec523bcb92a5f6e19d568d7a

commit 2199ed5089131580ec523bcb92a5f6e19d568d7a
Author: Jean-François Geyelin <jif@chromium.org>
Date: Thu Sep 14 15:32:04 2017

Add metrics for camera search on iOS.

Bug:  764748 
Change-Id: Id3429bb603b10db2899557192e24b9db31614ebc
Reviewed-on: https://chromium-review.googlesource.com/664816
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Jean-François Geyelin <jif@chromium.org>
Cr-Commit-Position: refs/heads/master@{#501957}
[modify] https://crrev.com/2199ed5089131580ec523bcb92a5f6e19d568d7a/ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm
[modify] https://crrev.com/2199ed5089131580ec523bcb92a5f6e19d568d7a/tools/metrics/actions/actions.xml

This bug requires manual review: Less than 25 days to go before AppStore submit on M62
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

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

Approved upon verification of the CL in Canary and on branch 3202

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/+/dca2c0a2d38e6cee48c9593dd94b66a540b95a30

commit dca2c0a2d38e6cee48c9593dd94b66a540b95a30
Author: Jean-François Geyelin <jif@chromium.org>
Date: Tue Sep 26 14:51:00 2017

Add metrics for camera search on iOS.

Bug:  764748 
Change-Id: Id3429bb603b10db2899557192e24b9db31614ebc
Reviewed-on: https://chromium-review.googlesource.com/664816
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Jean-François Geyelin <jif@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#501957}(cherry picked from commit 2199ed5089131580ec523bcb92a5f6e19d568d7a)
Reviewed-on: https://chromium-review.googlesource.com/684179
Reviewed-by: Jean-François Geyelin <jif@chromium.org>
Cr-Commit-Position: refs/branch-heads/3202@{#448}
Cr-Branched-From: fa6a5d87adff761bc16afc5498c3f5944c1daa68-refs/heads/master@{#499098}
[modify] https://crrev.com/dca2c0a2d38e6cee48c9593dd94b66a540b95a30/ios/chrome/browser/ui/toolbar/web_toolbar_controller.mm
[modify] https://crrev.com/dca2c0a2d38e6cee48c9593dd94b66a540b95a30/tools/metrics/actions/actions.xml