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

webrtc/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 201 matching lines @@
       int(uint8_t settings));
   MOCK_METHOD2(SendNACK,
       int32_t(const uint16_t* nackList, const uint16_t size));
   MOCK_METHOD1(SendNack, void(const std::vector<uint16_t>& sequence_numbers));
   MOCK_METHOD2(SetStorePacketsStatus,
                void(const bool enable, const uint16_t numberToStore));
   MOCK_CONST_METHOD0(StorePackets, bool());
   MOCK_METHOD1(RegisterRtcpStatisticsCallback, void(RtcpStatisticsCallback*));
   MOCK_METHOD0(GetRtcpStatisticsCallback, RtcpStatisticsCallback*());
   MOCK_METHOD1(SendFeedbackPacket, bool(const rtcp::TransportFeedback& packet));
-  MOCK_METHOD1(RegisterAudioCallback,
-      int32_t(RtpAudioFeedback* messagesCallback));
   MOCK_METHOD1(SetAudioPacketSize,
       int32_t(const uint16_t packetSizeSamples));
   MOCK_METHOD3(SendTelephoneEventOutband,
       int32_t(const uint8_t key, const uint16_t time_ms, const uint8_t level));
   MOCK_METHOD1(SetSendREDPayloadType,
       int32_t(const int8_t payloadType));
   MOCK_CONST_METHOD1(SendREDPayloadType, int32_t(int8_t* payloadType));
   MOCK_METHOD2(SetRTPAudioLevelIndicationStatus,
       int32_t(const bool enable, const uint8_t ID));
   MOCK_METHOD1(SetAudioLevel,
@@ skipping 27 matching lines @@
       void(StreamDataCountersCallback*));
   MOCK_CONST_METHOD0(GetSendChannelRtpStatisticsCallback,
       StreamDataCountersCallback*(void));
   // Members.
   unsigned int remote_ssrc_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_MOCKS_MOCK_RTP_RTCP_H_