Update ICE protocol to handle closed channel

remoting/protocol/connection_tester.h

Index: remoting/protocol/connection_tester.h
diff --git a/remoting/protocol/connection_tester.h b/remoting/protocol/connection_tester.h
index e0fc09f3eda6c2718b05ce502112907d6b9d2c71..f118c54306378628c34d8fcdab739c5b5bbcc2ad 100644
--- a/remoting/protocol/connection_tester.h
+++ b/remoting/protocol/connection_tester.h
@@ -126,13 +126,13 @@ class MessagePipeConnectionTester : public MessagePipe::EventHandler {
   void OnMessagePipeClosed() override;
 
  private:
+  class MessageSender;
+
   base::RunLoop run_loop_;
-  MessagePipe* host_pipe_;
   MessagePipe* client_pipe_;
-  int message_size_;
-  int message_count_;
 
-  std::vector<std::unique_ptr<VideoPacket>> sent_messages_;
+  std::unique_ptr<MessageSender> sender_;
+
   std::vector<std::unique_ptr<VideoPacket>> received_messages_;
 };