Add support for dynamic channels in WebrtcTransport.

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 eda98b4e8ee0743ae8b0033fd8a99c5c14755d2d..fc63968367a519d7f35f86fbdd65cb988bf24a05 100644
--- a/remoting/protocol/connection_tester.h
+++ b/remoting/protocol/connection_tester.h
@@ -12,6 +12,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
+#include "remoting/protocol/message_pipe.h"
 
 namespace net {
 class DrainableIOBuffer;
@@ -26,7 +27,6 @@ class VideoPacket;
 
 namespace protocol {
 
-class MessagePipe;
 class P2PDatagramSocket;
 class P2PStreamSocket;
 
@@ -109,18 +109,20 @@ class DatagramConnectionTester {
   int bad_packets_received_;
 };
 
-class MessagePipeConnectionTester {
+class MessagePipeConnectionTester : public MessagePipe::EventHandler {
  public:
   MessagePipeConnectionTester(MessagePipe* client_pipe,
                               MessagePipe* host_pipe,
                               int message_size,
                               int message_count);
-  ~MessagePipeConnectionTester();
+  ~MessagePipeConnectionTester() override;
 
   void RunAndCheckResults();
 
  protected:
-  void OnMessageReceived(std::unique_ptr<CompoundBuffer> message);
+  // MessagePipe::EventHandler interface.
+  void OnMessageReceived(std::unique_ptr<CompoundBuffer> message) override;
+  void OnMessagePipeClosed() override;
 
  private:
   base::RunLoop run_loop_;