Prepare to abstract PersistedData by making it part of the configurator.

components/update_client/update_engine.cc

Index: components/update_client/update_engine.cc
diff --git a/components/update_client/update_engine.cc b/components/update_client/update_engine.cc
index f56793f78bd9a1c99cf5737d061a52213ff89418..99864045585e012f164ad2d410b387a4a545c39d 100644
--- a/components/update_client/update_engine.cc
+++ b/components/update_client/update_engine.cc
@@ -58,7 +58,6 @@ UpdateEngine::UpdateEngine(
       update_checker_factory_(update_checker_factory),
       crx_downloader_factory_(crx_downloader_factory),
       ping_manager_(ping_manager),
-      metadata_(new PersistedData(config->GetPrefService())),
       notify_observers_callback_(notify_observers_callback) {}
 
 UpdateEngine::~UpdateEngine() {
@@ -152,8 +151,7 @@ void UpdateEngine::DoUpdateCheck(const UpdateContextIterator& it) {
   auto& update_context = *it;
   DCHECK(update_context);
 
-  update_context->update_checker =
-      update_checker_factory_(config_, metadata_.get());
+  update_context->update_checker = update_checker_factory_(config_);
 
   update_context->update_checker->CheckForUpdates(
       update_context->ids, update_context->components,