The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/16da6828a42b4fde85fcf986a6a642bb6170b6fd

commit 16da6828a42b4fde85fcf986a6a642bb6170b6fd
Author: Moe Ahmadi <mahmadi@chromium.org>
Date: Fri Jun 01 23:29:07 2018

[AF] Removes "Learn More" link from credit card save infobars on mobile

Bug:  848841 
Change-Id: Iebef5c799aa6bcd018a89d57389deffbe42c85b2
Reviewed-on: https://chromium-review.googlesource.com/1082971
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563860}
[modify] https://crrev.com/16da6828a42b4fde85fcf986a6a642bb6170b6fd/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc
[modify] https://crrev.com/16da6828a42b4fde85fcf986a6a642bb6170b6fd/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h

Moe, I think your change covers both Android and iOS, let me know if it is not the case. I can change in Android. 

What about desktop change here ?

Yes, it does affect both. I tested it on Android and iOS and both are fixed. I'm not sure if "learn more" on Desktop is as problematic. rfeng@, wdyt?

Deleted: Screen Shot 2018-06-01 at 8.47.29 PM.png 35.3 KB

	Screen Shot 2018-06-01 at 8.47.29 PM.png 35.3 KB View Download

Verified on Chrome Canary 69.0.3449.0

Your change meets the bar and is auto-approved for M68. Please go ahead and merge the CL to branch 3440 manually. Please contact milestone owner if you have questions.
Owners: cmasso@(Android), kariahda@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

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/+/6334ffcbe9ee185ff2cdc6cfca8fe5fe1dcfd083

commit 6334ffcbe9ee185ff2cdc6cfca8fe5fe1dcfd083
Author: Moe Ahmadi <mahmadi@chromium.org>
Date: Wed Jun 06 17:08:43 2018

[AF] Removes "Learn More" link from credit card save infobars on mobile

Bug:  848841 
Change-Id: Iebef5c799aa6bcd018a89d57389deffbe42c85b2
Reviewed-on: https://chromium-review.googlesource.com/1082971
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#563860}(cherry picked from commit 16da6828a42b4fde85fcf986a6a642bb6170b6fd)
Reviewed-on: https://chromium-review.googlesource.com/1089230
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/branch-heads/3440@{#212}
Cr-Branched-From: 010ddcfda246975d194964ccf20038ebbdec6084-refs/heads/master@{#561733}
[modify] https://crrev.com/6334ffcbe9ee185ff2cdc6cfca8fe5fe1dcfd083/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc
[modify] https://crrev.com/6334ffcbe9ee185ff2cdc6cfca8fe5fe1dcfd083/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h

Verified in 68.0.3440.56 Beta in iPhone7(iOS 11.4), iPad (iOS 11.4)

Followed the below steps

1. Enable 'offers uploading Autofilled credit cards' and 'Enable updated prompt explanation when offering credit card upload' in chrome://flags
2. Go to https://rsolomakhin.github.io/autofill
3. Go to Credit card autofill and tap on button 'CC Fill Form(president)'
4. Tap on submit button

Observed result:
In Credit card local save infobar the learn button is not displayed

Link to screenshot:

https://drive.google.com/file/d/1aMq36bKswmMGxAoxL9Q0qB2pHMv-k_nh/view?usp=sharing