Wire up RTP keep-alive in ortc api.

webrtc/pc/srtptransport.h

Index: webrtc/pc/srtptransport.h
diff --git a/webrtc/pc/srtptransport.h b/webrtc/pc/srtptransport.h
index be746d50c81aa4dbc4fcf322d2eacc0092d6b559..58ef205f872cc397474e65fd377403dae43dfaef 100644
--- a/webrtc/pc/srtptransport.h
+++ b/webrtc/pc/srtptransport.h
@@ -78,12 +78,12 @@ class SrtpTransport : public RtpTransportInternal {
     rtp_transport_->AddHandledPayloadType(payload_type);
   }
 
-  RtcpParameters GetRtcpParameters() const override {
-    return rtp_transport_->GetRtcpParameters();
+  RTCError SetParameters(const RtpTransportParameters& parameters) override {
+    return rtp_transport_->SetParameters(parameters);
   }
 
-  RTCError SetRtcpParameters(const RtcpParameters& parameters) override {
-    return rtp_transport_->SetRtcpParameters(parameters);
+  RtpTransportParameters GetParameters() const override {
+    return rtp_transport_->GetParameters();
   }
 
   // TODO(zstein): Remove this when we remove RtpTransportAdapter.