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

chrome/browser/extensions/updater/chrome_update_client_config.cc

Index: chrome/browser/extensions/updater/chrome_update_client_config.cc
diff --git a/chrome/browser/extensions/updater/chrome_update_client_config.cc b/chrome/browser/extensions/updater/chrome_update_client_config.cc
index 4dfb696cf0366b1cc08c40ad06f4db4ecbe43d4a..bbc38547943c8d56ff505dc38349448591bede2a 100644
--- a/chrome/browser/extensions/updater/chrome_update_client_config.cc
+++ b/chrome/browser/extensions/updater/chrome_update_client_config.cc
@@ -9,6 +9,7 @@
 #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 {
@@ -100,6 +101,10 @@ bool ChromeUpdateClientConfig::UseCupSigning() const {
   return impl_.UseCupSigning();
 }
 
+PrefService* ChromeUpdateClientConfig::GetPrefService() const {
+  return nullptr;
+}
+
 ChromeUpdateClientConfig::~ChromeUpdateClientConfig() {}
 
 }  // namespace extensions