Add new ANA stats to GetStats() to count the number of actions taken by each controller.

webrtc/voice_engine/channel_proxy.cc

Index: webrtc/voice_engine/channel_proxy.cc
diff --git a/webrtc/voice_engine/channel_proxy.cc b/webrtc/voice_engine/channel_proxy.cc
index cdd4b6624ff53612ffacfceeebecf37d5dd98c1c..353325234178abbc72d5ce86cc5817cfe805dea7 100644
--- a/webrtc/voice_engine/channel_proxy.cc
+++ b/webrtc/voice_engine/channel_proxy.cc
@@ -144,6 +144,10 @@ AudioDecodingCallStats ChannelProxy::GetDecodingCallStatistics() const {
   return stats;
 }
 
+ANAStats ChannelProxy::GetANAStatistics() const {
+  return channel()->GetANAStatistics();
+}
+
 int ChannelProxy::GetSpeechOutputLevel() const {
   RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
   return channel()->GetSpeechOutputLevel();