Fix unused variable pylint warning.

examples/python/__mojo__.py

 # Copyright 2015 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.
 
 """Example python application implementing the Echo service."""
 
 import logging
 
 import example_service_mojom
 from mojo_application import application_delegate
 from mojo_application import service_provider_impl
 from mojo_application import application_runner
 
 import mojo_system
 
 class ExampleApp(application_delegate.ApplicationDelegate):
-  def OnAcceptConnection(self, service_provider, requestor_url,
+  def OnAcceptConnection(self,
+                         requestor_url,
+                         resolved_url,
+                         service_provider,
                          exposed_services):
     service_provider.AddService(ExampleServiceImpl)
     return True
 
 
 class ExampleServiceImpl(example_service_mojom.ExampleService):
   def Ping(self, ping_value):
     return ping_value
 
 
 def MojoMain(app_request_handle):
   application_runner.RunMojoApplication(ExampleApp(), app_request_handle)