[Password Manager] Switch password manager code to use "base/feature_list.h".

components/password_manager.gypi

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       # GN version: //components/password_manager/core/browser
       'target_name': 'password_manager_core_browser',
       'type': 'static_library',
@@ skipping 189 matching lines @@
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'password_manager/core/common/credential_manager_types.cc',
         'password_manager/core/common/credential_manager_types.h',
         'password_manager/core/common/experiments.cc',
         'password_manager/core/common/experiments.h',
+        'password_manager/core/common/password_manager_features.cc',
+        'password_manager/core/common/password_manager_features.h',
         'password_manager/core/common/password_manager_pref_names.cc',
         'password_manager/core/common/password_manager_pref_names.h',
         'password_manager/core/common/password_manager_switches.cc',
         'password_manager/core/common/password_manager_switches.h',
         'password_manager/core/common/password_manager_ui.h',
       ],
     },
     {
       # GN version: //components/password_manager/sync/browser
       'target_name': 'password_manager_sync_browser',
@@ skipping 100 matching lines @@
             'password_manager/content/browser/credential_manager_dispatcher.cc',
             'password_manager/content/browser/credential_manager_dispatcher.h',
             'password_manager/content/browser/password_manager_internals_service_factory.cc',
             'password_manager/content/browser/password_manager_internals_service_factory.h',
           ],
         },
       ],
     }],
   ],
 }