Docserver: SidenavDataSource refactor, transition to DataSourceRegistry

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

Index: chrome/common/extensions/docs/server2/manifest_data_source.py
diff --git a/chrome/common/extensions/docs/server2/manifest_data_source.py b/chrome/common/extensions/docs/server2/manifest_data_source.py
index 6fac731b133f30583ceb412ff248a796d5fa4c69..6a850da177c6c63aa6c3ebd6266c7073d49524e1 100644
--- a/chrome/common/extensions/docs/server2/manifest_data_source.py
+++ b/chrome/common/extensions/docs/server2/manifest_data_source.py
@@ -99,7 +99,7 @@ def _AddLevelAnnotations(features):
 class ManifestDataSource(DataSource):
   '''Provides access to the properties in manifest features.
   '''
-  def __init__(self, server_instance):
+  def __init__(self, server_instance, _):
     self._manifest_path = server_instance.manifest_json_path
     self._features_path = server_instance.manifest_features_path
     self._file_system = server_instance.host_file_system