Add module for counting date-last-roll-call and persisting those counts

components/update_client.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/update_client
       'target_name': 'update_client',
       'type': 'static_library',
@@ skipping 26 matching lines @@
         'update_client/component_patcher.cc',
         'update_client/component_patcher.h',
         'update_client/component_patcher_operation.cc',
         'update_client/component_patcher_operation.h',
         'update_client/component_unpacker.cc',
         'update_client/component_unpacker.h',
         'update_client/configurator.h',
         'update_client/crx_downloader.cc',
         'update_client/crx_downloader.h',
         'update_client/crx_update_item.h',
+        'update_client/persisted_data.cc',
+        'update_client/persisted_data.h',
         'update_client/ping_manager.cc',
         'update_client/ping_manager.h',
         'update_client/request_sender.cc',
         'update_client/request_sender.h',
         'update_client/task.h',
         'update_client/task_update.cc',
         'update_client/task_update.h',
         'update_client/update_checker.cc',
         'update_client/update_checker.h',
         'update_client/update_client.cc',
@@ skipping 30 matching lines @@
         'update_client/test_configurator.cc',
         'update_client/test_configurator.h',
         'update_client/test_installer.cc',
         'update_client/test_installer.h',
         'update_client/url_request_post_interceptor.cc',
         'update_client/url_request_post_interceptor.h',
       ],
     },
   ],
 }