Add support for dynamic channels in WebrtcTransport.

remoting/protocol/stream_message_pipe_adapter.cc

Index: remoting/protocol/stream_message_pipe_adapter.cc
diff --git a/remoting/protocol/stream_message_pipe_adapter.cc b/remoting/protocol/stream_message_pipe_adapter.cc
index 96bd32ba795f9a00156030d9460afd6eccdae5f4..a441c96413352113cb6201db8f90f8c1fecfd1ef 100644
--- a/remoting/protocol/stream_message_pipe_adapter.cc
+++ b/remoting/protocol/stream_message_pipe_adapter.cc
@@ -36,9 +36,10 @@ StreamMessagePipeAdapter::StreamMessagePipeAdapter(
 
 StreamMessagePipeAdapter::~StreamMessagePipeAdapter() {}
 
-void StreamMessagePipeAdapter::StartReceiving(
-    const MessageReceivedCallback& callback) {
-  reader_.StartReading(socket_.get(), callback,
+void StreamMessagePipeAdapter::Start(EventHandler* event_handler) {
+  reader_.StartReading(socket_.get(),
+                       base::Bind(&EventHandler::OnMessageReceived,
+                                  base::Unretained(event_handler)),
                        base::Bind(&StreamMessagePipeAdapter::CloseOnError,
                                   base::Unretained(this)));
 }