Refactor NACK bitrate allocation

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index be8ab34a2771117680367ff7e1e4653ec4c3ab01..05108af80d5a0d7da373818791f6315e184a4398 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -63,7 +63,8 @@ RtpRtcp::Configuration::Configuration()
       send_frame_count_observer(nullptr),
       send_side_delay_observer(nullptr),
       event_log(nullptr),
-      send_packet_observer(nullptr) {}
+      send_packet_observer(nullptr),
+      nack_rate_limiter(nullptr) {}
 
 RtpRtcp* RtpRtcp::CreateRtpRtcp(const RtpRtcp::Configuration& configuration) {
   if (configuration.clock) {
@@ -89,7 +90,8 @@ ModuleRtpRtcpImpl::ModuleRtpRtcpImpl(const Configuration& configuration)
                   configuration.send_frame_count_observer,
                   configuration.send_side_delay_observer,
                   configuration.event_log,
-                  configuration.send_packet_observer),
+                  configuration.send_packet_observer,
+                  configuration.nack_rate_limiter),
       rtcp_sender_(configuration.audio,
                    configuration.clock,
                    configuration.receive_statistics,