Expose codec implementation names in stats.

webrtc/video/receive_statistics_proxy.cc

Index: webrtc/video/receive_statistics_proxy.cc
diff --git a/webrtc/video/receive_statistics_proxy.cc b/webrtc/video/receive_statistics_proxy.cc
index 5b456a817f5511f939db3a2dbd608b5020118ec4..6fb82f2d93161e471f31c396d8dbbe728a1fa73e 100644
--- a/webrtc/video/receive_statistics_proxy.cc
+++ b/webrtc/video/receive_statistics_proxy.cc
@@ -80,6 +80,11 @@ void ReceiveStatisticsProxy::OnIncomingPayloadType(int payload_type) {
   stats_.current_payload_type = payload_type;
 }
 
+void ReceiveStatisticsProxy::OnDecoderImplementationName(
+    const char* implementation_name) {
+  rtc::CritScope lock(&crit_);
+  stats_.decoder_implementation_name = implementation_name;
+}
 void ReceiveStatisticsProxy::OnIncomingRate(unsigned int framerate,
                                             unsigned int bitrate_bps) {
   rtc::CritScope lock(&crit_);