Expose RtpCodecParameters to VideoMediaInfo stats.

webrtc/media/engine/webrtcvideoengine2.h

Index: webrtc/media/engine/webrtcvideoengine2.h
diff --git a/webrtc/media/engine/webrtcvideoengine2.h b/webrtc/media/engine/webrtcvideoengine2.h
index ef893d2e98fa2ee1ae60d45cd41b02277ac8b9ea..f4f8a9dd06a528ce5c4f43df3e3e827c72dc96e3 100644
--- a/webrtc/media/engine/webrtcvideoengine2.h
+++ b/webrtc/media/engine/webrtcvideoengine2.h
@@ -410,6 +410,7 @@ class WebRtcVideoChannel2 : public VideoMediaChannel, public webrtc::Transport {
     void SetSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink);
 
     VideoReceiverInfo GetVideoReceiverInfo(bool log_stats);
+    const webrtc::VideoReceiveStream::Config& config() const { return config_; }
 
     // Used to disable RED/FEC when the remote description doesn't contain those
     // codecs. This is needed to be able to work around an RTX bug which is only
@@ -487,6 +488,7 @@ class WebRtcVideoChannel2 : public VideoMediaChannel, public webrtc::Transport {
   void FillReceiverStats(VideoMediaInfo* info, bool log_stats);
   void FillBandwidthEstimationStats(const webrtc::Call::Stats& stats,
                                     VideoMediaInfo* info);
+  void FillSendAndReceiveCodecStats(VideoMediaInfo* video_media_info);
 
   rtc::ThreadChecker thread_checker_;