[Smart Lock, Prefs reconciliation] Prefs migration logic for desktop platforms.

chrome/chrome_browser.gypi

 # Copyright 2012 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2012 matching lines @@
       'third_party/mozilla_security_manager/nsNSSCertHelper.cpp',
       'third_party/mozilla_security_manager/nsNSSCertHelper.h',
       'third_party/mozilla_security_manager/nsNSSCertificate.cpp',
       'third_party/mozilla_security_manager/nsNSSCertificate.h',
       'third_party/mozilla_security_manager/nsUsageArrayHelper.cpp',
       'third_party/mozilla_security_manager/nsUsageArrayHelper.h',
     ],
     'chrome_browser_password_manager_sources': [
       'browser/password_manager/chrome_password_manager_client.cc',
       'browser/password_manager/chrome_password_manager_client.h',
+      'browser/password_manager/password_manager_migration_service.cc',
+      'browser/password_manager/password_manager_migration_service.h',
       'browser/password_manager/password_manager_util_android.cc',
       'browser/password_manager/password_manager_util_linux.cc',
       'browser/password_manager/password_manager_util_mac.mm',
       'browser/password_manager/password_manager_util_win.cc',
       'browser/password_manager/password_store_factory.cc',
       'browser/password_manager/password_store_factory.h',
       'browser/password_manager/password_store_mac.cc',
       'browser/password_manager/password_store_mac.h',
       'browser/password_manager/password_store_mac_internal.h',
       'browser/password_manager/password_store_proxy_mac.cc',
@@ skipping 2077 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }