Make SyncBackendRegistrar aware of loaded data

chrome/browser/sync/abstract_profile_sync_service_test.h

Index: chrome/browser/sync/abstract_profile_sync_service_test.h
diff --git a/chrome/browser/sync/abstract_profile_sync_service_test.h b/chrome/browser/sync/abstract_profile_sync_service_test.h
index 32f61b0ba32f9065d16282ceedea911baa450705..c4141009c481e003bb4c6b922ae636de12babc5c 100644
--- a/chrome/browser/sync/abstract_profile_sync_service_test.h
+++ b/chrome/browser/sync/abstract_profile_sync_service_test.h
@@ -56,7 +56,7 @@ class AbstractProfileSyncServiceTest : public testing::Test {
 
   virtual void TearDown() OVERRIDE;
 
-  bool CreateRoot(syncer::ModelType model_type);
+  bool CreateRoot(syncer::ModelType model_type, syncer::UserShare* user_share);
 
   static ProfileKeyedService* BuildTokenService(Profile* profile);
  protected:
@@ -75,13 +75,13 @@ class CreateRootHelper {
                    syncer::ModelType model_type);
   virtual ~CreateRootHelper();
 
-  const base::Closure& callback() const;
+  const base::Callback<void(syncer::UserShare*)>& callback() const;
   bool success();
 
  private:
-  void CreateRootCallback();
+  void CreateRootCallback(syncer::UserShare*);
 
-  base::Closure callback_;
+  base::Callback<void(syncer::UserShare*)> callback_;
   AbstractProfileSyncServiceTest* test_;
   syncer::ModelType model_type_;
   bool success_;