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

components/update_client/update_client.cc

 // 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.
 
 #include "components/update_client/update_client.h"
 
 #include <algorithm>
 #include <queue>
 #include <set>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_checker.h"
+#include "components/prefs/pref_registry_simple.h"
 #include "components/update_client/configurator.h"
 #include "components/update_client/crx_update_item.h"
+#include "components/update_client/persisted_data.h"
 #include "components/update_client/ping_manager.h"
 #include "components/update_client/task_update.h"
 #include "components/update_client/update_checker.h"
 #include "components/update_client/update_client_internal.h"
 #include "components/update_client/update_engine.h"
 #include "components/update_client/update_response.h"
 #include "components/update_client/utils.h"
 #include "url/gurl.h"
 
 namespace update_client {
@@ skipping 209 matching lines @@
   ping_manager_->SendPing(&item);
 }
 
 scoped_refptr<UpdateClient> UpdateClientFactory(
     const scoped_refptr<Configurator>& config) {
   scoped_ptr<PingManager> ping_manager(new PingManager(config));
   return new UpdateClientImpl(config, std::move(ping_manager),
                               &UpdateChecker::Create, &CrxDownloader::Create);
 }
 
+void RegisterPrefs(PrefRegistrySimple* registry) {
+  PersistedData::RegisterPrefs(registry);
+}
+
 }  // namespace update_client