Thanks for the bug. As in  bug 593027  it would be helpful to have some pointers to the design discussions here, in case questions come in the future.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/983af5012da174a6a50c38ea956e2e1422646995

commit 983af5012da174a6a50c38ea956e2e1422646995
Author: kolos <kolos@chromium.org>
Date: Thu Mar 31 09:54:38 2016

[Password manager] Human readable origins for Android credentials on chrome://settings/passwords

PasswordStore::GetAutofillableLoginsWithAffiliatedRealms is introduced in this CL. It is same as GetAutofillableLogins, but also send a request to AffiliatedMatchHelper to fetch affiliated web realm and inject it into |form.affiliated_web_realm|. The request doesn't issue an on-demand network request. If a request to cache fails, no web realm will be injected into corresponding form.

If there are a number of affiliated web realms, an arbitrary realm is injected.

Origin for Android credentials will be shown like "example.com (Android)", where "example.com" is the fetched web realm.

BUG= 593341 

Review URL: https://codereview.chromium.org/1615653005

Cr-Commit-Position: refs/heads/master@{#384236}

[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/chrome/app/generated_resources.grd
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/chrome/browser/resources/options/password_manager.js
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/chrome/browser/resources/options/password_manager_list.js
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/chrome/browser/ui/passwords/password_manager_presenter.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/chrome/browser/ui/webui/options/password_manager_handler.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/autofill/core/common/password_form.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/autofill/core/common/password_form.h
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/affiliated_match_helper.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/affiliated_match_helper.h
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/affiliated_match_helper_unittest.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/mock_affiliated_match_helper.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/mock_affiliated_match_helper.h
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/password_store.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/password_store.h
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/password_store_unittest.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/password_ui_utils.cc
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/password_ui_utils.h
[modify] https://crrev.com/983af5012da174a6a50c38ea956e2e1422646995/components/password_manager/core/browser/password_ui_utils_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9143cf6049ea20c8dabe0e2481b459f0f3fffa50

commit 9143cf6049ea20c8dabe0e2481b459f0f3fffa50
Author: kolos <kolos@chromium.org>
Date: Thu Mar 31 12:33:38 2016

[Password Manager] Human readable origins for blacklisted Android credentials

Complements this CL (https://codereview.chromium.org/1615653005/) with implementation of human readable origins for blacklisted logins. Uses the same logic as the mentioned CL.

BUG= 593341 

Review URL: https://codereview.chromium.org/1823333003

Cr-Commit-Position: refs/heads/master@{#384255}

[modify] https://crrev.com/9143cf6049ea20c8dabe0e2481b459f0f3fffa50/chrome/browser/ui/passwords/password_manager_presenter.cc
[modify] https://crrev.com/9143cf6049ea20c8dabe0e2481b459f0f3fffa50/components/password_manager/core/browser/password_store.cc
[modify] https://crrev.com/9143cf6049ea20c8dabe0e2481b459f0f3fffa50/components/password_manager/core/browser/password_store.h
[modify] https://crrev.com/9143cf6049ea20c8dabe0e2481b459f0f3fffa50/components/password_manager/core/browser/password_store_unittest.cc