NetEq: Implement logging of Delayed Packet Outage Events

webrtc/modules/audio_coding/neteq/statistics_calculator.cc

Index: webrtc/modules/audio_coding/neteq/statistics_calculator.cc
diff --git a/webrtc/modules/audio_coding/neteq/statistics_calculator.cc b/webrtc/modules/audio_coding/neteq/statistics_calculator.cc
index ce800dd065d0b291b2b5cdfea08c360393f21ef9..37a0d50946fdeb4d609deca22f71632e293ec613 100644
--- a/webrtc/modules/audio_coding/neteq/statistics_calculator.cc
+++ b/webrtc/modules/audio_coding/neteq/statistics_calculator.cc
@@ -15,6 +15,7 @@
 
 #include "webrtc/modules/audio_coding/neteq/decision_logic.h"
 #include "webrtc/modules/audio_coding/neteq/delay_manager.h"
+#include "webrtc/system_wrappers/interface/metrics.h"
 
 namespace webrtc {
 
@@ -96,6 +97,12 @@ void StatisticsCalculator::SecondaryDecodedSamples(int num_samples) {
   secondary_decoded_samples_ += num_samples;
 }
 
+void StatisticsCalculator::LogDelayedPacketOutageEvent(int outage_duration_ms) {
+  RTC_HISTOGRAM_COUNTS("WebRTC.Audio.DelayedPacketOutageEventMs",
+                       outage_duration_ms, 1 /* min */, 2000 /* max */,
+                       100 /* bucket count */);
+}
+
 void StatisticsCalculator::StoreWaitingTime(int waiting_time_ms) {
   assert(next_waiting_time_index_ < kLenWaitingTimes);
   waiting_times_[next_waiting_time_index_] = waiting_time_ms;