Dynamically generate a heading for Extension Docs API pages

chrome/common/extensions/docs/server2/template_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.
 
 import logging
 import os
 
 from branch_utility import BranchUtility
 import compiled_file_system as compiled_fs
 from docs_server_utils import FormatKey
@@ skipping 93 matching lines @@
     self._public_template_path = public_template_path
     self._private_template_path = private_template_path
     self._static_resources = static_resources
 
   def Render(self, template_name):
     """This method will render a template named |template_name|, fetching all
     the partial templates needed from |self._cache|. Partials are retrieved
     from the TemplateDataSource with the |get| method.
     """
     template = self.GetTemplate(self._public_template_path, template_name)
-    if not template:
+    if template is None:
       return None
       # TODO error handling
     render_data = template.render({
       'api_list': self._api_list_data_source,
       'apis': self._api_data_source,
       'branchInfo': self._branch_info,
       'intros': self._intro_data_source,
       'sidenavs': self._sidenav_data_source,
       'partials': self,
       'samples': self._samples_data_source,
@@ skipping 19 matching lines @@
 
   def get(self, key):
     return self.GetTemplate(self._private_template_path, key)
 
   def GetTemplate(self, base_path, template_name):
     try:
       return self._cache.GetFromFile(
           '/'.join((base_path, FormatKey(template_name))))
     except FileNotFoundError as e:
       return None