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

webrtc/call/audio_send_stream.h

Index: webrtc/call/audio_send_stream.h
diff --git a/webrtc/call/audio_send_stream.h b/webrtc/call/audio_send_stream.h
index fa5b5eecc8d20c5fa57116b7b1aba8c5bc7bd887..9b8504c6f0ae2925feb0e18e21395b820e4f5e89 100644
--- a/webrtc/call/audio_send_stream.h
+++ b/webrtc/call/audio_send_stream.h
@@ -59,6 +59,11 @@ class AudioSendStream {
     float residual_echo_likelihood = -1.0f;
     float residual_echo_likelihood_recent_max = -1.0f;
     bool typing_noise_detected = false;
+    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 Config {