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

webrtc/voice_engine/channel.cc

Index: webrtc/voice_engine/channel.cc
diff --git a/webrtc/voice_engine/channel.cc b/webrtc/voice_engine/channel.cc
index 1a56e811819d19d078f4c6f1ebaa040a0118e466..0e83989ccf6dbef9d261ea1798064ea0349b60fb 100644
--- a/webrtc/voice_engine/channel.cc
+++ b/webrtc/voice_engine/channel.cc
@@ -2856,6 +2856,10 @@ void Channel::GetDecodingCallStatistics(AudioDecodingCallStats* stats) const {
   audio_coding_->GetDecodingCallStatistics(stats);
 }
 
+ANAStats Channel::GetANAStatistics() const {
+  return audio_coding_->GetANAStats();
+}
+
 uint32_t Channel::GetDelayEstimate() const {
   rtc::CritScope lock(&video_sync_lock_);
   return audio_coding_->FilteredCurrentDelayMs() + playout_delay_ms_;