Docserver: Use real BranchUtility for local server instances

chrome/common/extensions/docs/server2/server_instance.py

 # 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.
 
 from api_data_source import APIDataSource
 from api_list_data_source import APIListDataSource
+from branch_utility import BranchUtility
 from compiled_file_system import CompiledFileSystem
 from content_providers import ContentProviders
 from document_renderer import DocumentRenderer
 from empty_dir_file_system import EmptyDirFileSystem
 from environment import IsDevServer
 from gcs_file_system_provider import CloudStorageFileSystemProvider
 from host_file_system_iterator import HostFileSystemIterator
 from host_file_system_provider import HostFileSystemProvider
 from object_store_creator import ObjectStoreCreator
 from platform_bundle import PlatformBundle
@@ skipping 96 matching lines @@
 
   @staticmethod
   def ForLocal():
     object_store_creator = ObjectStoreCreator(start_empty=False,
                                               store_type=TestObjectStore)
     host_file_system_provider = HostFileSystemProvider.ForLocal(
         object_store_creator)
     return ServerInstance(
         object_store_creator,
         CompiledFileSystem.Factory(object_store_creator),
-        TestBranchUtility.CreateWithCannedData(),
+        BranchUtility.Create(object_store_creator),
         host_file_system_provider,
         CloudStorageFileSystemProvider(object_store_creator))