Just to clarify -- is the experiment over yet? Or will you update this bug when it will be?

Thanks for filing this!

Vaclav

Experiment (if it will not be prolonged) has M56 as end milestone set by Finch config

https://codereview.chromium.org/1273053002/ there is this dummy CL, which does some part of the work.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3f2af32fde9d68961f9fd41c824441627acd6be8

commit 3f2af32fde9d68961f9fd41c824441627acd6be8
Author: melandory <melandory@chromium.org>
Date: Tue Feb 14 11:57:52 2017

Use Smart Lock preference instead of Chrome Password manager preference.

After this CL the ability to change  Chrome Password manager preference will be not exposed anymore. The two preferences have same values, because they were reconciled previously.

Smart Lock preference: credentials_enable_service
Chrome Password Manager preference: profile.password_manager_enabled

BUG=517087,  658683 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1273053002
Cr-Commit-Position: refs/heads/master@{#450326}

[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/android/preferences/pref_service_bridge.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/extensions/api/preference/preference_api.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/extensions/api/preference/preference_apitest.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/extensions/api/settings_private/prefs_util.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/password_manager/chrome_password_manager_client.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/password_manager/chrome_password_manager_client_unittest.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/policy/configuration_policy_handler_list_factory.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/resources/options/browser_options.html
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/resources/settings/passwords_and_forms_page/passwords_and_forms_page.html
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/browser/resources/settings/passwords_and_forms_page/passwords_and_forms_page.js
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/test/data/policy/policy_test_cases.json
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/chrome/test/data/webui/settings/passwords_and_forms_browsertest.js
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/components/password_manager/core/browser/password_form_manager_unittest.cc
[modify] https://crrev.com/3f2af32fde9d68961f9fd41c824441627acd6be8/components/password_manager/core/browser/password_generation_manager_unittest.cc

Your change meets the bar and is auto-approved for M57. Please go ahead and merge the CL to branch 2987 manually. Please contact milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

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

If possible, could you please merge your CL into M57 branch 2987 before 5 PM PT today, Wednesday (02/15/17). Thank you.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7ca30d63ded3525cdab87cb205161ba3751b75ab

commit 7ca30d63ded3525cdab87cb205161ba3751b75ab
Author: Tatiana Gornak <melandory@chromium.org>
Date: Thu Feb 16 09:27:42 2017

Use Smart Lock preference instead of Chrome Password manager preference.

After this CL the ability to change  Chrome Password manager preference will be not exposed anymore. The two preferences have same values, because they were reconciled previously.

Smart Lock preference: credentials_enable_service
Chrome Password Manager preference: profile.password_manager_enabled

BUG=517087,  658683 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1273053002
Cr-Commit-Position: refs/heads/master@{#450326}
(cherry picked from commit 3f2af32fde9d68961f9fd41c824441627acd6be8)

Review-Url: https://codereview.chromium.org/2693373004 .
Cr-Commit-Position: refs/branch-heads/2987@{#540}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/android/preferences/pref_service_bridge.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/extensions/api/preference/preference_api.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/extensions/api/preference/preference_apitest.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/extensions/api/settings_private/prefs_util.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/password_manager/chrome_password_manager_client.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/password_manager/chrome_password_manager_client_unittest.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/policy/configuration_policy_handler_list_factory.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/resources/options/browser_options.html
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/resources/settings/passwords_and_forms_page/passwords_and_forms_page.html
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/browser/resources/settings/passwords_and_forms_page/passwords_and_forms_page.js
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/test/data/policy/policy_test_cases.json
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/chrome/test/data/webui/settings/passwords_and_forms_browsertest.js
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/components/password_manager/core/browser/password_form_manager_unittest.cc
[modify] https://crrev.com/7ca30d63ded3525cdab87cb205161ba3751b75ab/components/password_manager/core/browser/password_generation_manager_unittest.cc