message: Add a comment regarding multiple transport is disabled
diff: @@ -2445,6 +2445,10 @@ const bool ProtocolHandlerImpl::ParseSecondaryTransportConfiguration(
  return false;
  }
  }
  + // note: even if settings_.multiple_transports_enabled() is false, we still
  + // send out an empty "secondaryTransports" parameter, along with
  + // "videoServiceTransports" and "audioServiceTransports" params which are
  + // useful without secondary transport.
  // Then, generate the "secondaryTransports" array for the StartSession ACK
  GenerateSecondaryTransportsForStartSessionAck(secondary_transport_types,
  