Reland of "Reporting of decoding_codec_plc events""

This is a reland of 0a88ea050cda58de81d624cf2764d46929447ed5.

The new stat will not be reported unless it is GT 0.

Reporting of decoding_codec_plc events

Bug: webrtc:10838
Change-Id: Ic8585b4eeae9a2643374f15bc2578d1141e59683
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/148448
Reviewed-by: Magnus Flodman <mflodman@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Commit-Queue: Alex Narest <alexnarest@google.com>
Cr-Commit-Position: refs/heads/master@{#28797}
diff --git a/modules/audio_coding/acm2/call_statistics.cc b/modules/audio_coding/acm2/call_statistics.cc
index a506ead..e97e529 100644
--- a/modules/audio_coding/acm2/call_statistics.cc
+++ b/modules/audio_coding/acm2/call_statistics.cc
@@ -28,7 +28,11 @@
       break;
     }
     case AudioFrame::kPLC: {
-      ++decoding_stat_.decoded_plc;
+      ++decoding_stat_.decoded_neteq_plc;
+      break;
+    }
+    case AudioFrame::kCodecPLC: {
+      ++decoding_stat_.decoded_codec_plc;
       break;
     }
     case AudioFrame::kCNG: {