Simplify data channel creation logic in WebRTC-based protocol

remoting/protocol/webrtc_connection_to_host.cc

Index: remoting/protocol/webrtc_connection_to_host.cc
diff --git a/remoting/protocol/webrtc_connection_to_host.cc b/remoting/protocol/webrtc_connection_to_host.cc
index c4deea51c3ff4fd401b731a36607cccd51dedf9a..eda4347af7572980c0c17ceaecb212d35086c6cf 100644
--- a/remoting/protocol/webrtc_connection_to_host.cc
+++ b/remoting/protocol/webrtc_connection_to_host.cc
@@ -104,7 +104,9 @@ void WebrtcConnectionToHost::OnSessionStateChange(Session::State state) {
 
 void WebrtcConnectionToHost::OnWebrtcTransportConnecting() {
   event_dispatcher_.reset(new ClientEventDispatcher());
-  event_dispatcher_->Init(transport_->outgoing_channel_factory(), this);
+  event_dispatcher_->Init(
+      transport_->CreateOutgoingChannel(event_dispatcher_->channel_name()),
+      this);
 }
 
 void WebrtcConnectionToHost::OnWebrtcTransportConnected() {}