Remove done notifications from incoming message handlers.

remoting/protocol/host_event_dispatcher.h

Index: remoting/protocol/host_event_dispatcher.h
diff --git a/remoting/protocol/host_event_dispatcher.h b/remoting/protocol/host_event_dispatcher.h
index b8c5c93871978c40a3acccb483f1bde7c422065d..9a6211a2beb9a787c32d23a504a8f5f86309fdfd 100644
--- a/remoting/protocol/host_event_dispatcher.h
+++ b/remoting/protocol/host_event_dispatcher.h
@@ -38,8 +38,7 @@ class HostEventDispatcher : public ChannelDispatcherBase {
   }
 
  private:
-  void OnMessageReceived(scoped_ptr<EventMessage> message,
-                         const base::Closure& done_task);
+  void OnMessageReceived(scoped_ptr<EventMessage> message);
 
   InputStub* input_stub_;
   OnInputEventCallback on_input_event_callback_;