Update smoothed bitrate.

webrtc/voice_engine/channel_proxy.h

Index: webrtc/voice_engine/channel_proxy.h
diff --git a/webrtc/voice_engine/channel_proxy.h b/webrtc/voice_engine/channel_proxy.h
index 8a78069609b6588692e987634eadd20b14a1318b..a866513c7b78971fb9dacc7b05e22969e225b517 100644
--- a/webrtc/voice_engine/channel_proxy.h
+++ b/webrtc/voice_engine/channel_proxy.h
@@ -97,6 +97,7 @@ class ChannelProxy {
   virtual void SetTransportOverhead(int transport_overhead_per_packet);
   virtual void AssociateSendChannel(const ChannelProxy& send_channel_proxy);
   virtual void DisassociateSendChannel();
+  virtual void AdaptCodec();
 
   virtual void SetRtcpRttStats(RtcpRttStats* rtcp_rtt_stats);
 
@@ -105,6 +106,7 @@ class ChannelProxy {
 
   rtc::ThreadChecker thread_checker_;
   rtc::RaceChecker race_checker_;
+  rtc::RaceChecker worker_queue_checker_;
   ChannelOwner channel_owner_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(ChannelProxy);