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

chrome/browser/extensions/updater/chrome_update_client_config.cc

 // Copyright 2015 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 "base/command_line.h"
 #include "base/version.h"
 #include "chrome/browser/component_updater/component_patcher_operation_out_of_process.h"
 #include "chrome/browser/extensions/updater/chrome_update_client_config.h"
 #include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/update_client/chrome_update_query_params_delegate.h"
 #include "chrome/common/channel_info.h"
+#include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_context.h"
 
 namespace extensions {
 
 // For privacy reasons, requires encryption of the component updater
 // communication with the update backend.
 ChromeUpdateClientConfig::ChromeUpdateClientConfig(
     content::BrowserContext* context)
     : impl_(base::CommandLine::ForCurrentProcess(),
             context->GetRequestContext(),
@@ skipping 71 matching lines @@
 }
 
 bool ChromeUpdateClientConfig::UseBackgroundDownloader() const {
   return impl_.UseBackgroundDownloader();
 }
 
 bool ChromeUpdateClientConfig::UseCupSigning() const {
   return impl_.UseCupSigning();
 }
 
+PrefService* ChromeUpdateClientConfig::GetPrefService() const {
+  return nullptr;
+}
+
 ChromeUpdateClientConfig::~ChromeUpdateClientConfig() {}
 
 }  // namespace extensions