Docserver: Include <h4> tags in the table of contents, it's needed for the API

chrome/common/extensions/docs/server2/intro_data_source.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 HTMLParser import HTMLParser
 import logging
 import os
 import re
 
 from data_source import DataSource
 from docs_server_utils import FormatKey
 from extensions_paths import INTROS_TEMPLATES, ARTICLES_TEMPLATES
 from file_system import FileNotFoundError
 from future import Future
 from third_party.handlebar import Handlebar
 
 
 
 # TODO(kalman): rename this HTMLDataSource or other, then have separate intro
 # article data sources created as instances of it.
 class IntroDataSource(DataSource):
   '''This class fetches the intros for a given API. From this intro, a table
   of contents dictionary is created, which contains the headings in the intro.
   '''
 
   def __init__(self, server_instance, request):
-    self._template_renderer = server_instance.template_renderer
     self._request = request
     self._cache = server_instance.compiled_fs_factory.Create(
         server_instance.host_file_system_provider.GetTrunk(),
         self._MakeIntro,
         IntroDataSource)
     self._ref_resolver = server_instance.ref_resolver_factory.Create()
 
   def _MakeIntro(self, intro_path, intro):
     # Guess the name of the API from the path to the intro.
     api_name = os.path.splitext(intro_path.split('/')[-1])[0]
@@ skipping 14 matching lines @@
       except FileNotFoundError:
         continue
     # Not found. Do the first operation again so that we get a stack trace - we
     # know that it'll fail.
     get_from_base_path(base_paths[0])
     raise AssertionError()
 
   def Cron(self):
     # TODO(kalman): Walk through the intros and articles directory.
     return Future(value=())