The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c9ce32e534c8bbf79b437283cf407923030f1d14

commit c9ce32e534c8bbf79b437283cf407923030f1d14
Author: spqchan <spqchan@chromium.org>
Date: Tue Jan 09 19:57:09 2018

[Mac] Limit the number of credit card autofill items on the touch bar

Limit the number of credit card items to 3 on the touch bar.

Bug:  800055 
Change-Id: Ie163d72ebc65342f1802742fd68bbf70d4f73e79
Reviewed-on: https://chromium-review.googlesource.com/857838
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#528081}
[modify] https://crrev.com/c9ce32e534c8bbf79b437283cf407923030f1d14/chrome/browser/ui/cocoa/autofill/autofill_popup_view_cocoa.mm

Tested this issue on Mac 10.13 touch bar using chrome: 65.0.3319.0 .
Observations:
------------
1. Only top 3 cards details displayed on touch bar though more than 3 cards are displayed on 'Name on Card' autofill popup.
2. only top 3 cards details displayed on touch bar though more than 3 cards are displayed on 'Credit card number' autofill popup.

As this issue working as intended, adding TE Verified labels. Please find the attached screenshot for reference.

Thanks..

Deleted: 20180111_145143.jpg 1.4 MB

	20180111_145143.jpg 1.4 MB View Download