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

ios/chrome/browser/component_updater/ios_component_updater_configurator.cc

Index: ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
diff --git a/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc b/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
index a441b5f58667fdbeaf43b7ea7a1014dad3fc1320..7222a08ebd978d8bc4338c5585fb34714c494b39 100644
--- a/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
+++ b/ios/chrome/browser/component_updater/ios_component_updater_configurator.cc
@@ -7,10 +7,13 @@
 #include <string>
 #include <vector>
 
+#include "base/memory/ptr_util.h"
 #include "base/task_scheduler/post_task.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "base/version.h"
 #include "components/component_updater/configurator_impl.h"
-#include "components/update_client/out_of_process_patcher.h"
+#include "components/update_client/component_patcher_operation.h"
+#include "components/update_client/persisted_data.h"
 #include "components/update_client/update_query_params.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/google/google_brand.h"
@@ -49,8 +52,8 @@ class IOSConfigurator : public update_client::Configurator {
   bool EnabledCupSigning() const override;
   scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
       const override;
-  PrefService* GetPrefService() const override;
   bool IsPerUserInstall() const override;
+  std::unique_ptr<update_client::PersistedData> CreateMetadata() const override;
 
  private:
   friend class base::RefCountedThreadSafe<IOSConfigurator>;
@@ -159,14 +162,16 @@ IOSConfigurator::GetSequencedTaskRunner() const {
        base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN});
 }
 
-PrefService* IOSConfigurator::GetPrefService() const {
-  return GetApplicationContext()->GetLocalState();
-}
-
 bool IOSConfigurator::IsPerUserInstall() const {
   return true;
 }
 
+std::unique_ptr<update_client::PersistedData> IOSConfigurator::CreateMetadata()
+    const {
+  return base::MakeUnique<update_client::PersistedData>(
+      GetApplicationContext()->GetLocalState());
+}
+
 }  // namespace
 
 scoped_refptr<update_client::Configurator> MakeIOSComponentUpdaterConfigurator(