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

webrtc/media/base/mediachannel.h

Index: webrtc/media/base/mediachannel.h
diff --git a/webrtc/media/base/mediachannel.h b/webrtc/media/base/mediachannel.h
index 99ed29169b04ae8d446b3df4aba858ece1e2db40..5debe31610c61d58919a58a5c3b269e860ed68f1 100644
--- a/webrtc/media/base/mediachannel.h
+++ b/webrtc/media/base/mediachannel.h
@@ -641,6 +641,11 @@ struct VoiceSenderInfo : public MediaSenderInfo {
   float residual_echo_likelihood;
   float residual_echo_likelihood_recent_max;
   bool typing_noise_detected;
+  rtc::Optional<int> ana_bitrate_action_counter;
+  rtc::Optional<int> ana_channel_action_counter;
+  rtc::Optional<int> ana_dtx_action_counter;
+  rtc::Optional<int> ana_fec_action_counter;
+  rtc::Optional<int> ana_frame_length_action_counter;
 };
 
 struct VoiceReceiverInfo : public MediaReceiverInfo {