Initial implementation of RtpTransportControllerReceive and related interfaces.

webrtc/modules/rtp_rtcp/include/flexfec_receiver.h

Index: webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
diff --git a/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h b/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
index 67dc813bc48c7f5de706e3004f5d6c0883fd9dd2..95bb934d165096d3da992482258744f2fadf4b5e 100644
--- a/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
+++ b/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
@@ -16,6 +16,7 @@
 #include "webrtc/base/basictypes.h"
 #include "webrtc/base/sequenced_task_checker.h"
 #include "webrtc/call/call.h"
+#include "webrtc/call/rtp_transport_controller_receive.h"
 #include "webrtc/modules/rtp_rtcp/include/ulpfec_receiver.h"
 #include "webrtc/modules/rtp_rtcp/source/forward_error_correction.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
@@ -33,17 +34,18 @@ class RecoveredPacketReceiver {
   virtual ~RecoveredPacketReceiver() = default;
 };
 
-class FlexfecReceiver {
+class FlexfecReceiver : public RtpPacketSinkInterface {
  public:
   FlexfecReceiver(uint32_t ssrc,
                   uint32_t protected_media_ssrc,
                   RecoveredPacketReceiver* recovered_packet_receiver);
   ~FlexfecReceiver();
 
+  // RtpPacketSink implementation.
   // Inserts a received packet (can be either media or FlexFEC) into the
   // internal buffer, and sends the received packets to the erasure code.
   // All newly recovered packets are sent back through the callback.
-  void OnRtpPacket(const RtpPacketReceived& packet);
+  void OnRtpPacket(const RtpPacketReceived& packet) override;
 
   // Returns a counter describing the added and recovered packets.
   FecPacketCounter GetPacketCounter() const;