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

chrome/browser/component_updater/chrome_component_updater_configurator.cc

Index: chrome/browser/component_updater/chrome_component_updater_configurator.cc
diff --git a/chrome/browser/component_updater/chrome_component_updater_configurator.cc b/chrome/browser/component_updater/chrome_component_updater_configurator.cc
index 6d2692085449d85171b1f0bf80940fa1bd03db30..914f5f2cbcbc0bda0897a83ddd0196a6c63f1dbb 100644
--- a/chrome/browser/component_updater/chrome_component_updater_configurator.cc
+++ b/chrome/browser/component_updater/chrome_component_updater_configurator.cc
@@ -21,6 +21,7 @@
 #include "components/component_updater/configurator_impl.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
+#include "components/update_client/persisted_data.h"
 #include "components/update_client/update_query_params.h"
 
 #if defined(OS_WIN)
@@ -64,6 +65,7 @@ class ChromeConfigurator : public update_client::Configurator {
       const override;
   PrefService* GetPrefService() const override;
   bool IsPerUserInstall() const override;
+  std::unique_ptr<update_client::PersistedData> CreateMetadata() const override;
 
  private:
   friend class base::RefCountedThreadSafe<ChromeConfigurator>;
@@ -198,6 +200,11 @@ bool ChromeConfigurator::IsPerUserInstall() const {
   return component_updater::IsPerUserInstall();
 }
 
+std::unique_ptr<update_client::PersistedData>
+ChromeConfigurator::CreateMetadata() const {
+  return base::MakeUnique<update_client::PersistedData>(GetPrefService());
+}
+
 }  // namespace
 
 void RegisterPrefsForChromeComponentUpdaterConfigurator(