Remove done notifications from incoming message handlers.

remoting/protocol/client_control_dispatcher.h

Index: remoting/protocol/client_control_dispatcher.h
diff --git a/remoting/protocol/client_control_dispatcher.h b/remoting/protocol/client_control_dispatcher.h
index daf31d090ce96a6e2c55b0e9a1856a673bc0af91..6e9b46ec97660be9743099a2fa1e9f87ca87cc17 100644
--- a/remoting/protocol/client_control_dispatcher.h
+++ b/remoting/protocol/client_control_dispatcher.h
@@ -52,8 +52,7 @@ class ClientControlDispatcher : public ChannelDispatcherBase,
   }
 
  private:
-  void OnMessageReceived(scoped_ptr<ControlMessage> message,
-                         const base::Closure& done_task);
+  void OnMessageReceived(scoped_ptr<ControlMessage> message);
 
   ClientStub* client_stub_;
   ClipboardStub* clipboard_stub_;