[Password Manager] Add UMA stats to track interaction with synced accounts.

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': [
     {
       'target_name': 'password_manager_core_browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 120 matching lines @@
       'include_dirs': [
         '..',
       ],
       'sources': [
         '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.cc',
         'password_manager/core/common/password_manager_ui.h',
+        'password_manager/core/common/sync_state.h',
       ],
     },
   ],
   'conditions': [
     ['OS != "ios"', {
       'targets': [
         {
           'target_name': 'password_manager_content_browser',
           'type': 'static_library',
           'dependencies': [
@@ skipping 15 matching lines @@
             'password_manager/content/browser/content_password_manager_driver.cc',
             'password_manager/content/browser/content_password_manager_driver.h',
             'password_manager/content/browser/password_manager_internals_service_factory.cc',
             'password_manager/content/browser/password_manager_internals_service_factory.h',
           ],
         },
       ],
     }],
   ],
 }