Experiment for the nack module.

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h

Index: webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
index ba0ed0e4c784251ef4fcdece0d1e39b12835ae0a..76faca0f7ebe24aa0e678abbf4d55b1a48349d61 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
@@ -219,8 +219,11 @@ class ModuleRtpRtcpImpl : public RtpRtcp {
   int SetSelectiveRetransmissions(uint8_t settings) override;
 
   // Send a Negative acknowledgment packet.
+  // TODO(philipel): Deprecate SendNACK and use SendNack instead.
   int32_t SendNACK(const uint16_t* nack_list, uint16_t size) override;
 
+  void SendNack(const std::vector<uint16_t>& sequence_numbers) override;
+
   // Store the sent packets, needed to answer to a negative acknowledgment
   // requests.
   void SetStorePacketsStatus(bool enable, uint16_t number_to_store) override;