Revert of Clean away use of RtpAudioFeedback interface from RTP/RTCP receiver code.

webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.h

Index: webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.h b/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.h
index b68febbb82b46cdee3d03a9858efa9137d98041d..1dd07d1cc923127f141046183b0ee5069e62c014 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.h
@@ -28,7 +28,8 @@
 class RTPReceiverAudio : public RTPReceiverStrategy,
                          public TelephoneEventHandler {
  public:
-  explicit RTPReceiverAudio(RtpData* data_callback);
+  RTPReceiverAudio(RtpData* data_callback,
+                   RtpAudioFeedback* incoming_messages_callback);
   virtual ~RTPReceiverAudio() {}
 
   // The following three methods implement the TelephoneEventHandler interface.
@@ -118,6 +119,8 @@
 
   uint8_t num_energy_;
   uint8_t current_remote_energy_[kRtpCsrcSize];
+
+  RtpAudioFeedback* cb_audio_feedback_;
 };
 }  // namespace webrtc