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

components/update_client/test_configurator.cc

Index: components/update_client/test_configurator.cc
diff --git a/components/update_client/test_configurator.cc b/components/update_client/test_configurator.cc
index 6ba5392befb2f185f0f93824c5fd44a9d31500af..1da523f8fc9dd75a7495ca156fcdc15d0f05ae9c 100644
--- a/components/update_client/test_configurator.cc
+++ b/components/update_client/test_configurator.cc
@@ -5,6 +5,7 @@
 #include "components/update_client/test_configurator.h"
 
 #include "base/version.h"
+#include "components/prefs/pref_service.h"
 #include "components/update_client/component_patcher_operation.h"
 #include "url/gurl.h"
 
@@ -153,4 +154,8 @@ TestConfigurator::GetSequencedTaskRunner() const {
   return worker_task_runner_;
 }
 
+PrefService* TestConfigurator::GetPrefService() const {
+  return nullptr;
+}
+
 }  // namespace update_client