Adding metrics to AEC3

webrtc/modules/audio_processing/aec3/render_delay_controller.cc

Index: webrtc/modules/audio_processing/aec3/render_delay_controller.cc
diff --git a/webrtc/modules/audio_processing/aec3/render_delay_controller.cc b/webrtc/modules/audio_processing/aec3/render_delay_controller.cc
index 834e1e7641c9da6188f81d81a6be0a4f14e0db11..195d8cd161065eed828a654a30a1b4e3c14b4d1b 100644
--- a/webrtc/modules/audio_processing/aec3/render_delay_controller.cc
+++ b/webrtc/modules/audio_processing/aec3/render_delay_controller.cc
@@ -18,7 +18,7 @@
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/modules/audio_processing/aec3/aec3_common.h"
 #include "webrtc/modules/audio_processing/aec3/echo_path_delay_estimator.h"
-#include "webrtc/system_wrappers/include/logging.h"
+#include "webrtc/modules/audio_processing/aec3/render_delay_controller_metrics.h"
 
 namespace webrtc {
 
@@ -81,6 +81,7 @@ class RenderDelayControllerImpl final : public RenderDelayController {
   int echo_path_delay_samples_ = 0;
   size_t align_call_counter_ = 0;
   rtc::Optional<size_t> headroom_samples_;
+  RenderDelayControllerMetrics metrics_;
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(RenderDelayControllerImpl);
 };
 
@@ -151,6 +152,8 @@ size_t RenderDelayControllerImpl::GetDelay(
     headroom_samples_ = rtc::Optional<size_t>();
   }
 
+  metrics_.Update(echo_path_delay_samples, delay_);
+
   data_dumper_->DumpRaw("aec3_render_delay_controller_delay", 1,
                         &echo_path_delay_samples_);
   data_dumper_->DumpRaw("aec3_render_delay_controller_buffer_delay", delay_);