Add content type information to encoded images and corresponding rtp extension header

webrtc/video/video_stream_decoder.cc

Index: webrtc/video/video_stream_decoder.cc
diff --git a/webrtc/video/video_stream_decoder.cc b/webrtc/video/video_stream_decoder.cc
index 6eea13f4d4b2bb4cdda3e617ec5af86147f67427..a7688ce13caa165fa241af152717fb3a83b4a434 100644
--- a/webrtc/video/video_stream_decoder.cc
+++ b/webrtc/video/video_stream_decoder.cc
@@ -76,10 +76,10 @@ VideoStreamDecoder::~VideoStreamDecoder() {
 // thread may have held the lock when calling VideoDecoder::Decode, Reset, or
 // Release. Acquiring the same lock in the path of decode callback can deadlock.
 int32_t VideoStreamDecoder::FrameToRender(VideoFrame& video_frame,
-                                          rtc::Optional<uint8_t> qp) {
-  receive_stats_callback_->OnDecodedFrame(qp);
+                                          rtc::Optional<uint8_t> qp,
+                                          VideoContentType content_type) {
+  receive_stats_callback_->OnDecodedFrame(qp, content_type);
   incoming_video_stream_->OnFrame(video_frame);
-
   return 0;
 }