Support decoding GenericNamedValue based policy.

net/tools/testserver/device_management.py

 #!/usr/bin/python2.5
 # Copyright (c) 2011 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.
 
 """A bare-bones test server for testing cloud policy support.
 
 This implements a simple cloud policy test server that can be used to test
 chrome's device management service client. The policy information is read from
 the file named device_management in the server's data directory. It contains
@@ skipping 333 matching lines @@
 
     Args:
       group_message: The protobuf message.
       field: The field of the message to set, it shuold be a member of
           group_message.DESCRIPTOR.fields.
       field_value: The value to set.
     '''
     if field.type == field.TYPE_BOOL:
       assert type(field_value) == bool
     elif field.type == field.TYPE_STRING:
-      assert type(field_value) == str
+      assert type(field_value) == str or type(field_value) == unicode
     elif field.type == field.TYPE_INT64:
       assert type(field_value) == int
     elif (field.type == field.TYPE_MESSAGE and
           field.message_type.name == 'StringList'):
       assert type(field_value) == list
       entries = group_message.__getattribute__(field.name).entries
       for list_item in field_value:
         entries.append(list_item)
       return
     else:
@@ skipping 242 matching lines @@
     return self._registered_tokens.get(dmtoken, None)
 
   def UnregisterDevice(self, dmtoken):
     """Unregisters a device identified by the given DM token.
 
     Args:
       dmtoken: The device management token provided by the client.
     """
     if dmtoken in self._registered_tokens.keys():
       del self._registered_tokens[dmtoken]