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

chrome/common/extensions/docs/server2/render_servlet.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 fnmatch import fnmatch
 import logging
 import mimetypes
 import posixpath
 import traceback
 from urlparse import urlsplit
@@ skipping 80 matching lines @@
         content_provider.file_system).Redirect(self._request.host, path)
     if redirect is not None:
       return Response.Redirect(redirect, permanent=False)
 
     content_and_type = content_provider.GetContentAndType(path).Get()
     if not content_and_type.content:
       logging.error('%s had empty content' % path)
 
     content = content_and_type.content
     if isinstance(content, Handlebar):
+      template_content, template_warnings = (
+          server_instance.template_renderer.Render(content, self._request))
       # HACK: the Google ID thing (google2ed...) doesn't have a title.
-      content, warnings = server_instance.document_renderer.Render(
-          server_instance.template_renderer.Render(content, self._request),
+      content, doc_warnings = server_instance.document_renderer.Render(
+          template_content,
           render_title=path != 'google2ed1af765c529f57.html')
+      warnings = template_warnings + doc_warnings
       if warnings:
         sep = '\n - '
         logging.warning('Rendering %s:%s%s' % (path, sep, sep.join(warnings)))
 
     content_type = content_and_type.content_type
     if isinstance(content, unicode):
       content = content.encode('utf-8')
       content_type += '; charset=utf-8'
 
     return Response.Ok(content, headers=_MakeHeaders(content_type))