Add codec name to CodecSpecificInfo and get the codec name stats from there instead.

webrtc/video/vie_encoder.cc

Index: webrtc/video/vie_encoder.cc
diff --git a/webrtc/video/vie_encoder.cc b/webrtc/video/vie_encoder.cc
index 956fd776d4c4be14e35f99d4a1553118643adaa5..1afbed00f371ccddfa147f7d46a6e128d5b62d0b 100644
--- a/webrtc/video/vie_encoder.cc
+++ b/webrtc/video/vie_encoder.cc
@@ -212,11 +212,9 @@ EncodedImageCallback::Result ViEEncoder::OnEncodedImage(
   return result;
 }
 
-void ViEEncoder::SendStatistics(uint32_t bit_rate,
-                                uint32_t frame_rate,
-                                const std::string& encoder_name) {
+void ViEEncoder::SendStatistics(uint32_t bit_rate, uint32_t frame_rate) {
   if (stats_proxy_)
-    stats_proxy_->OnEncoderStatsUpdate(frame_rate, bit_rate, encoder_name);
+    stats_proxy_->OnEncoderStatsUpdate(frame_rate, bit_rate);
 }
 
 void ViEEncoder::OnReceivedSLI(uint8_t picture_id) {