Thanks Moe! Just to add a bit more context: in general, I'm in favor of improving this holistically across all platforms in the future (e.g. providing a way for users to access the payments sync setting from autofill settings, maybe via a link to sync settings). But glad that we're at least making things consistent for now :)

Agreed, would be great to fix now. 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0db6397a68993c6d1fa8986a09e4dce11dc48779

commit 0db6397a68993c6d1fa8986a09e4dce11dc48779
Author: Moe Ahmadi <mahmadi@chromium.org>
Date: Tue Jul 10 18:20:53 2018

[AF][IOS] Moves Autofill's Google Pay import switch to sync settings page

before: https://drive.google.com/file/d/1itVUr0s6pPW9roOzamc4t3MW0644gI-n/view
after: https://drive.google.com/file/d/1ENvOGwgE21zKCIANcfsB3Y_fT1erwo4m/view

Bug:855088

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ie4abd38ea871d26e128c99a5f3012421cb714218
Reviewed-on: https://chromium-review.googlesource.com/1128186
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573817}
[modify] https://crrev.com/0db6397a68993c6d1fa8986a09e4dce11dc48779/ios/chrome/browser/ui/settings/autofill_collection_view_controller.mm
[modify] https://crrev.com/0db6397a68993c6d1fa8986a09e4dce11dc48779/ios/chrome/browser/ui/settings/autofill_collection_view_controller_unittest.mm
[modify] https://crrev.com/0db6397a68993c6d1fa8986a09e4dce11dc48779/ios/chrome/browser/ui/settings/autofill_settings_egtest.mm
[modify] https://crrev.com/0db6397a68993c6d1fa8986a09e4dce11dc48779/ios/chrome/browser/ui/settings/sync_settings_collection_view_controller.mm
[modify] https://crrev.com/0db6397a68993c6d1fa8986a09e4dce11dc48779/ios/chrome/browser/ui/settings/sync_settings_collection_view_controller_unittest.mm

Hi Lindsay, This setting has now moved to the Sync settings page. Can we have someone from the test team verify this change? Steps to test:

1) Sign into Chrome.
2) Make sure user has credit cards in Google Pay by visiting https://pay.google.com/payments/u/0/home#paymentMethods
3) Verify the following interactions with the Google Pay toggle in the Sync settings.
 a) Turning on "Sync everything" should disable and turn on Google Pay toggle.
 b) Turning off Autofill toggle should disable and turn off Google Pay toggle.
 c) Turning on Autofill toggle should enable and turn on Google Pay toggle.
 d) Must be able to turn on/off Google Pay toggle independently when enabled.

Turning off this toggle should stop showing credit cards in the Autofill settings page. Note that this toggle doesn't affect addresses. Since the request to fetch credit cards from Google Pay is asynchronous, close Chrome settings and reopen it after changing the toggle in order to trigger the Autofill settings to get updated.

Verified 70.0.3501.0 Canary, iPhone X iOS 11.4 , iPad Pro 12'9 iOS 11.3.1.
Testing done as below:
As per Steps in #7 
Account used is a managed account (Corp account in this case) to Sign in to Chrome.Also added a real Credit card number in for it to work in https://pay.google.com/payments/u/0/home#paymentMethods

a)Turning on "Sync everything" should disable and turn on Google Pay toggle. - PASS
b)) Turning off Autofill toggle should disable and turn off Google Pay toggle. - PASS
c) Turning on Autofill toggle should enable and turn on Google Pay toggle. - PASS
d) Must be able to turn on/off Google Pay toggle independently when enabled. - PASS

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/86055195c43367569bedbfa38f84d7da1b8176d4

commit 86055195c43367569bedbfa38f84d7da1b8176d4
Author: Moe Ahmadi <mahmadi@chromium.org>
Date: Tue Jul 31 18:41:34 2018

[AF][IOS] Use same title for the Google Pay toggle on Desktop and iOS

iOS: https://drive.google.com/file/d/198YXGP4TW8VcZ-scZy6jf-8GPHLRQc2U/view?usp=sharing
Desktop: https://drive.google.com/file/d/1ouJGiWYjg-IfIaMdxKPXGh1sN3EDrYxQ/view?usp=sharing

Bug:  855088 
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I92786a9aa33e228297352b9dfaf5730b00daf629
Reviewed-on: https://chromium-review.googlesource.com/1155484
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579492}
[modify] https://crrev.com/86055195c43367569bedbfa38f84d7da1b8176d4/chrome/app/settings_strings.grdp
[modify] https://crrev.com/86055195c43367569bedbfa38f84d7da1b8176d4/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
[modify] https://crrev.com/86055195c43367569bedbfa38f84d7da1b8176d4/components/autofill_strings.grdp
[modify] https://crrev.com/86055195c43367569bedbfa38f84d7da1b8176d4/ios/chrome/app/strings/ios_strings.grd
[modify] https://crrev.com/86055195c43367569bedbfa38f84d7da1b8176d4/ios/chrome/browser/ui/settings/sync_settings_collection_view_controller.mm
[modify] https://crrev.com/86055195c43367569bedbfa38f84d7da1b8176d4/ios/chrome/browser/ui/settings/sync_settings_collection_view_controller_unittest.mm

Requesting merge into M69 for the https://chromium-review.googlesource.com/1155484. Note the CL in question involves string changes.

This bug requires manual review: There is .grd file changes and we are only 34 days from stable.
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), kariahda@(iOS), cindyb@(ChromeOS), govind@(Desktop)

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

Are the string changes critical for M69? Can we possibly take the change but without the string changes?

Also let's get canary verification for this please.

Not critical AFAIK. Since string merges aren't straightforward let's not merge.

Thank you.