Docserver: Implement the content providers infrastructure, where a

chrome/common/extensions/docs/server2/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.
 
 class Request(object):
   '''Request data.
   '''
   def __init__(self, path, host, headers):
     self.path = path.lstrip('/')
     self.host = host.rstrip('/')
@@ skipping 87 matching lines @@
     self.headers.update(headers)
 
   def SetStatus(self, status):
     self.status = status
 
   def GetRedirect(self):
     if self.headers.get('Location') is None:
       return (None, None)
     return (self.headers.get('Location'), self.status == 301)
 
+  def IsNotFound(self):
+    return self.status == 404
+
   def __eq__(self, other):
     return (isinstance(other, self.__class__) and
             str(other.content) == str(self.content) and
             other.headers == self.headers and
             other.status == self.status)
 
   def __ne__(self, other):
     return not (self == other)
 
   def __repr__(self):
     return 'Response(content=%s bytes, status=%s, headers=%s)' % (
         len(self.content), self.status, self.headers)
 
   def __str__(self):
     return repr(self)
 
 class Servlet(object):
   def __init__(self, request):
     self._request = request
 
   def Get(self):
     '''Returns a Response.
     '''
     raise NotImplemented()