Make SyncBackendRegistrar aware of loaded data

chrome/browser/sync/abstract_profile_sync_service_test.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SYNC_ABSTRACT_PROFILE_SYNC_SERVICE_TEST_H_
 #define CHROME_BROWSER_SYNC_ABSTRACT_PROFILE_SYNC_SERVICE_TEST_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 38 matching lines @@
 
 class AbstractProfileSyncServiceTest : public testing::Test {
  public:
   AbstractProfileSyncServiceTest();
   virtual ~AbstractProfileSyncServiceTest();
 
   virtual void SetUp() OVERRIDE;
 
   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:
   MessageLoopForUI ui_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread db_thread_;
   content::TestBrowserThread file_thread_;
   content::TestBrowserThread io_thread_;
   TokenService* token_service_;
   scoped_ptr<TestProfileSyncService> service_;
 };
 
 class CreateRootHelper {
  public:
   CreateRootHelper(AbstractProfileSyncServiceTest* test,
                    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_;
 };
 
 #endif  // CHROME_BROWSER_SYNC_ABSTRACT_PROFILE_SYNC_SERVICE_TEST_H_