Docserver: Add support for viewing docs with a codereview patch applied

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 82 matching lines @@
     self.headers[key] = value
 
   def AddHeaders(self, headers):
     '''Adds several headers to the response.
     '''
     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 __repr__(self):
     return 'Response(content=%s bytes, status=%s, headers=%s entries)' % (
         len(self.content), self.status, len(self.headers.keys()))
 
   def __str__(self):
     return repr(self)
 
 class Servlet(object):
   def __init__(self, request):
     self._request = request
 
   def Get(self):
     '''Returns a Response.
     '''
     raise NotImplemented()