Reland of move RTPPayloadStrategy and simplify RTPPayloadRegistry

webrtc/modules/rtp_rtcp/include/rtp_receiver.h

Index: webrtc/modules/rtp_rtcp/include/rtp_receiver.h
diff --git a/webrtc/modules/rtp_rtcp/include/rtp_receiver.h b/webrtc/modules/rtp_rtcp/include/rtp_receiver.h
index a69300841d45f9c21db414a44ec5d22af7ac0a42..54a99c93a1de5fc4dbb62a08536d529242ca9572 100644
--- a/webrtc/modules/rtp_rtcp/include/rtp_receiver.h
+++ b/webrtc/modules/rtp_rtcp/include/rtp_receiver.h
@@ -61,13 +61,6 @@ class RtpReceiver {
   virtual int32_t RegisterReceivePayload(const CodecInst& audio_codec) = 0;
   // Registers a receive payload in the payload registry.
   virtual int32_t RegisterReceivePayload(const VideoCodec& video_codec) = 0;
-  // TODO(magjed): Remove once external code is updated.
-  virtual int32_t RegisterReceivePayload(
-      const char payload_name[RTP_PAYLOAD_NAME_SIZE],
-      const int8_t payload_type,
-      const uint32_t frequency,
-      const size_t channels,
-      const uint32_t rate) = 0;
 
   // De-registers |payload_type| from the payload registry.
   virtual int32_t DeRegisterReceivePayload(const int8_t payload_type) = 0;