Doc server manifest page generation

chrome/common/extensions/docs/server2/local_renderer.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 os
 import sys
 
 from render_servlet import RenderServlet
 from server_instance import ServerInstance
 from servlet import Request
 
 class _LocalRenderServletDelegate(object):
   def CreateServerInstanceForChannel(self, channel):
     return ServerInstance.ForLocal()
 
 class LocalRenderer(object):
   '''Renders pages fetched from the local file system.
   '''
   @staticmethod
   def Render(path):
-    assert not path.contains('\\')
+    assert not '\\' in path
     def render_path(path):
       return RenderServlet(Request(path, 'http://localhost', {}),
                            _LocalRenderServletDelegate(),
                            default_channel='trunk').Get()
     response = render_path(path)
     while response.status in [301, 302]:
       redirect = response.headers['Location']
       sys.stderr.write('<!-- Redirected %s to %s -->\n' % (path, redirect))
       response = render_path(redirect)
     return response