Simplify data channel creation logic in WebRTC-based protocol

remoting/protocol/webrtc_connection_to_client.cc

Index: remoting/protocol/webrtc_connection_to_client.cc
diff --git a/remoting/protocol/webrtc_connection_to_client.cc b/remoting/protocol/webrtc_connection_to_client.cc
index 65df2fc4f4a82e4e47877a133b536a7571dbab59..92430d6d0d0df94171d73760c6e6ed3cd79ca07d 100644
--- a/remoting/protocol/webrtc_connection_to_client.cc
+++ b/remoting/protocol/webrtc_connection_to_client.cc
@@ -155,10 +155,11 @@ void WebrtcConnectionToClient::OnSessionStateChange(Session::State state) {
 }
 
 void WebrtcConnectionToClient::OnWebrtcTransportConnecting() {
-  // Create outgoing control channel by initializing |control_dispatcher_|.
-  // |event_dispatcher_| is initialized later because event channel is expected
-  // to be created by the client.
-  control_dispatcher_->Init(transport_->outgoing_channel_factory(), this);
+  // Create outgoing control channel. |event_dispatcher_| is initialized later
+  // because event channel is expected to be created by the client.
+  control_dispatcher_->Init(
+      transport_->CreateOutgoingChannel(control_dispatcher_->channel_name()),
+      this);
 }
 
 void WebrtcConnectionToClient::OnWebrtcTransportConnected() {