Add anonymous-only option to apply_issue

rietveld.py

 # coding: utf-8
 # 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.
 """Defines class Rietveld to easily access a rietveld instance.
 
 Security implications:
 
 The following hypothesis are made:
 - Rietveld enforces:
@@ skipping 32 matching lines @@
     if email and password:
       get_creds = lambda: (email, password)
       self.rpc_server = upload.HttpRpcServer(
             self.url,
             get_creds,
             extra_headers=extra_headers or {})
     else:
       if email == '':
         # If email is given as an empty string, then assume we want to make
         # requests that do not need authentication.  Bypass authentication by
-        # setting the flag to True.
-        get_creds = lambda: (email, None)
-        self.rpc_server = upload.HttpRpcServer(url, get_creds)
-        self.rpc_server.authenticated = True
+        # setting the auth_function to None.
+        self.rpc_server = upload.HttpRpcServer(url, None)
       else:
         self.rpc_server = upload.GetRpcServer(url, email)
 
     self._xsrf_token = None
     self._xsrf_token_time = None
 
   def xsrf_token(self):
     if (not self._xsrf_token_time or
         (time.time() - self._xsrf_token_time) > 30*60):
       self._xsrf_token_time = time.time()
@@ skipping 378 matching lines @@
     if not messages:
       # Assumes self._lookup uses deepcopy.
       del data['messages']
     return data
 
   def get_patchset_properties(self, issue, patchset):
     return self._lookup(
         'get_patchset_properties',
         (issue, patchset),
         super(CachingRietveld, self).get_patchset_properties)