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 6b79e9ca5e88747ac1db37e423f155b6521ca235..c64ae402f2a276d4abeb0b1bc4c3b358e05b62c6 100644
--- a/webrtc/video/receive_statistics_proxy.cc
+++ b/webrtc/video/receive_statistics_proxy.cc
@@ -75,6 +75,11 @@ 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_);