The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/544b6af10b43b275d33a46f5e053da3874676b78

commit 544b6af10b43b275d33a46f5e053da3874676b78
Author: Maxim Kolosovskiy <kolos@chromium.org>
Date: Fri Oct 20 16:13:24 2017

[Password Manager] Disable username editing and password selector for federated and CredentialManagement API entries

Bug:  776696 
Change-Id: I280ccd7769545906225cd8b6120f7c08cd0c7eb5
Reviewed-on: https://chromium-review.googlesource.com/730747
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510458}
[modify] https://crrev.com/544b6af10b43b275d33a46f5e053da3874676b78/chrome/browser/ui/passwords/manage_passwords_bubble_model.cc
[modify] https://crrev.com/544b6af10b43b275d33a46f5e053da3874676b78/chrome/browser/ui/passwords/manage_passwords_bubble_model.h
[modify] https://crrev.com/544b6af10b43b275d33a46f5e053da3874676b78/chrome/browser/ui/passwords/manage_passwords_bubble_model_unittest.cc
[modify] https://crrev.com/544b6af10b43b275d33a46f5e053da3874676b78/chrome/browser/ui/views/passwords/manage_passwords_bubble_view.cc

vasilii@: Please close it when the issue is fixed for Mac. Thx.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ee91c845186924d8458a9ebb1a86b4cca440b30d

commit ee91c845186924d8458a9ebb1a86b4cca440b30d
Author: Vasilii Sukhanov <vasilii@chromium.org>
Date: Fri Nov 03 17:19:20 2017

Disable username editing for the CM API on Mac.

Bug:  776696 
Change-Id: I0ecc2af8dcc8201968c74a8ba15624ccde2a5e2d
Reviewed-on: https://chromium-review.googlesource.com/753330
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Commit-Queue: Maxim Kolosovskiy <kolos@chromium.org>
Reviewed-by: Maxim Kolosovskiy <kolos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513813}
[modify] https://crrev.com/ee91c845186924d8458a9ebb1a86b4cca440b30d/chrome/browser/ui/cocoa/passwords/save_pending_password_view_controller.mm