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

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc

Index: webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
index 7645c4a1f2cf3e2cd04c0929699936d280c8ba44..17e4a8b987ca5f4e519140ccf5941e91c8956532 100644
--- a/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
@@ -135,6 +135,11 @@ void AudioNetworkAdaptorImpl::StopDebugDump() {
   debug_dump_writer_.reset(nullptr);
 }
 
+ANAStats AudioNetworkAdaptorImpl::GetStats() const {
+  // TODO(ivoc): Actually implement the stat.

[hbos, 2017/09/04 08:49:54]

Link to a bug?

[ivoc, 2017/09/04 15:48:02]

Added.

+  return ANAStats();
+}

[hbos, 2017/09/04 08:49:54]

Can you add a audio_network_adapter_impl_unittest.cc that verifies that default
stats are returned so that the test fails if you implement this (forcing you to
fix the test)?

[ivoc, 2017/09/04 15:48:03]

Done.

+
 void AudioNetworkAdaptorImpl::DumpNetworkMetrics() {
   if (debug_dump_writer_)
     debug_dump_writer_->DumpNetworkMetrics(last_metrics_, rtc::TimeMillis());