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

webrtc/audio/audio_send_stream.cc

Index: webrtc/audio/audio_send_stream.cc
diff --git a/webrtc/audio/audio_send_stream.cc b/webrtc/audio/audio_send_stream.cc
index 5bf6f2b8072a4d6199255c65149c6ff072d34723..cb73e84a23a42ffe98da5f0835af021ea6a1587d 100644
--- a/webrtc/audio/audio_send_stream.cc
+++ b/webrtc/audio/audio_send_stream.cc
@@ -333,6 +333,7 @@ webrtc::AudioSendStream::Stats AudioSendStream::GetStats() const {
   internal::AudioState* audio_state =
       static_cast<internal::AudioState*>(audio_state_.get());
   stats.typing_noise_detected = audio_state->typing_noise_detected();
+  stats.ana_statistics = channel_proxy_->GetANAStatistics();
 
   return stats;
 }