Docserver: make file_system a property of Create

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

 # Copyright 2013 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 data_source import DataSource
 from third_party.json_schema_compiler.json_parse import Parse
 
 class StringsDataSource(DataSource):
   '''Provides templates with access to a key to string mapping defined in a
   JSON configuration file.
   '''
   def __init__(self, server_instance, _):
-    self._cache = server_instance.compiled_host_fs_factory.Create(
-        lambda _, strings_json: Parse(strings_json), StringsDataSource)
+    self._cache = server_instance.compiled_fs_factory.Create(
+        server_instance.host_file_system_provider.GetTrunk(),
+        lambda _, strings_json: Parse(strings_json),
+        StringsDataSource)
     self._strings_json_path = server_instance.strings_json_path
 
   def Cron(self):
     self._cache.GetFromFile(self._strings_json_path).Get()
 
   def get(self, key):
     return self._cache.GetFromFile(self._strings_json_path).Get()[key]