Docserver: Add 'deprecated since' message for API nodes

chrome/common/extensions/docs/server2/availability_finder.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.
 
 import posixpath
 
 from api_schema_graph import APISchemaGraph
 from branch_utility import BranchUtility, ChannelInfo
 from extensions_paths import API_PATHS, JSON_TEMPLATES
 from features_bundle import FeaturesBundle
@@ skipping 167 matching lines @@
     '''
     if version < _SVN_MIN_VERSION:
       # SVN data isn't available below this version.
       return False
     features_bundle = self._CreateFeaturesBundle(file_system)
     available_channel = None
     if version >= _API_FEATURES_MIN_VERSION:
       # The _api_features.json file first appears in version 28 and should be
       # the most reliable for finding API availability.
       available_channel = _GetChannelFromAPIFeatures(api_name,
-                                                          features_bundle)
+                                                     features_bundle)
     if version >= _ORIGINAL_FEATURES_MIN_VERSION:
       # The _permission_features.json and _manifest_features.json files are
       # present in Chrome 20 and onwards. Use these if no information could be
       # found using _api_features.json.
       available_channel = (
           available_channel or
           _GetChannelFromPermissionFeatures(api_name, features_bundle) or
           _GetChannelFromManifestFeatures(api_name, features_bundle))
       if available_channel is not None:
         return available_channel == 'stable'
@@ skipping 157 matching lines @@
       # Continue looping until there are no longer differences between this
       # version and trunk.
       return version_stat != trunk_stat
 
     self._file_system_iterator.Ascending(
         self.GetAPIAvailability(api_name).channel_info,
         update_availability_graph)
 
     self._node_level_object_store.Set(api_name, availability_graph)
     return availability_graph