UMA stats for browser/renderer audio rendering buffer size mismatch.

content/renderer/media/track_audio_renderer.cc

Index: content/renderer/media/track_audio_renderer.cc
diff --git a/content/renderer/media/track_audio_renderer.cc b/content/renderer/media/track_audio_renderer.cc
index 625a65d127b8371a986e664156323d369fd016e0..47c1c08420baa6ab1f756670b69be96991f2e36d 100644
--- a/content/renderer/media/track_audio_renderer.cc
+++ b/content/renderer/media/track_audio_renderer.cc
@@ -318,6 +318,11 @@ void TrackAudioRenderer::MaybeStartSink() {
            << source_params_.AsHumanReadableString() << "}, hardware_params_={"
            << hardware_params.AsHumanReadableString() << "}, sink parameters={"
            << sink_params.AsHumanReadableString() << '}';
+
+  // Specify the latency info to be passed to the browser side.
+  sink_params.set_latency_tag(AudioDeviceFactory::GetSourceLatencyType(
+      AudioDeviceFactory::kSourceNonRtcAudioTrack));
+
   sink_->Initialize(sink_params, this);
   sink_->Start();
   sink_->SetVolume(volume_);