Forward output glitch information from stream WebRTC log

media/audio/mac/audio_low_latency_input_mac.cc

Index: media/audio/mac/audio_low_latency_input_mac.cc
diff --git a/media/audio/mac/audio_low_latency_input_mac.cc b/media/audio/mac/audio_low_latency_input_mac.cc
index 2429dd1a442d3dc90e539924aaa6790bc6169913..a4ca226459281ac375fa33c7b03f5c0e5230ea30 100644
--- a/media/audio/mac/audio_low_latency_input_mac.cc
+++ b/media/audio/mac/audio_low_latency_input_mac.cc
@@ -236,9 +236,11 @@ static void AddSystemInfoToUMA(bool is_on_battery, int num_resumes) {
 // http://developer.apple.com/library/mac/#technotes/tn2091/_index.html
 // for more details and background regarding this implementation.
 
-AUAudioInputStream::AUAudioInputStream(AudioManagerMac* manager,
-                                       const AudioParameters& input_params,
-                                       AudioDeviceID audio_device_id)
+AUAudioInputStream::AUAudioInputStream(
+    AudioManagerMac* manager,
+    const AudioParameters& input_params,
+    AudioDeviceID audio_device_id,
+    const AudioManager::StatisticsCallback& statistics_callback)
     : manager_(manager),
       number_of_frames_(input_params.frames_per_buffer()),
       number_of_frames_provided_(0),
@@ -264,6 +266,7 @@ AUAudioInputStream::AUAudioInputStream(AudioManagerMac* manager,
       number_of_restart_indications_(0),
       number_of_restart_attempts_(0),
       total_number_of_restart_attempts_(0),
+      statistics_callback_(statistics_callback),
       weak_factory_(this) {
   DCHECK(manager_);
 
@@ -1644,6 +1647,8 @@ void AUAudioInputStream::ReportAndResetStats() {
   // Even if there aren't any glitches, we want to record it to get a feel for
   // how often we get no glitches vs the alternative.
   UMA_HISTOGRAM_COUNTS("Media.Audio.Capture.Glitches", glitches_detected_);
+  statistics_callback_.Run(this, "Media.Audio.Capture.Glitches",
+                           glitches_detected_);
 
   if (glitches_detected_ != 0) {
     auto lost_frames_ms = (total_lost_frames_ * 1000) / format_.mSampleRate;