Configure VoE NACK through AudioReceiveStream::Config.

webrtc/media/engine/fakewebrtcvoiceengine.h

Index: webrtc/media/engine/fakewebrtcvoiceengine.h
diff --git a/webrtc/media/engine/fakewebrtcvoiceengine.h b/webrtc/media/engine/fakewebrtcvoiceengine.h
index 9a328e9b8d6dabf78bfee029ea3ce5dcf5d58948..7592bcea43cf906381d728f1ebf85ed66476bb92 100644
--- a/webrtc/media/engine/fakewebrtcvoiceengine.h
+++ b/webrtc/media/engine/fakewebrtcvoiceengine.h
@@ -135,11 +135,9 @@ class FakeWebRtcVoiceEngine
     int max_encoding_bandwidth = 0;
     bool opus_dtx = false;
     bool red = false;
-    bool nack = false;
     int cn8_type = 13;
     int cn16_type = 105;
     int red_type = 117;
-    int nack_max_packets = 0;
     uint32_t send_ssrc = 0;
     int associate_send_channel = -1;
     std::vector<webrtc::CodecInst> recv_codecs;
@@ -181,12 +179,6 @@ class FakeWebRtcVoiceEngine
   int GetMaxEncodingBandwidth(int channel) {
     return channels_[channel]->max_encoding_bandwidth;
   }
-  bool GetNACK(int channel) {
-    return channels_[channel]->nack;
-  }
-  int GetNACKMaxPackets(int channel) {
-    return channels_[channel]->nack_max_packets;
-  }
   int GetSendCNPayloadType(int channel, bool wideband) {
     return (wideband) ?
         channels_[channel]->cn16_type :
@@ -495,12 +487,7 @@ class FakeWebRtcVoiceEngine
     redPayloadtype = channels_[channel]->red_type;
     return 0;
   }
-  WEBRTC_FUNC(SetNACKStatus, (int channel, bool enable, int maxNoPackets)) {
-    WEBRTC_CHECK_CHANNEL(channel);
-    channels_[channel]->nack = enable;
-    channels_[channel]->nack_max_packets = maxNoPackets;
-    return 0;
-  }
+  WEBRTC_STUB(SetNACKStatus, (int channel, bool enable, int maxNoPackets));
 
   // webrtc::VoEVolumeControl
   WEBRTC_STUB(SetSpeakerVolume, (unsigned int));