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

webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc

Index: webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc b/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
index 41fd7ff3845a8eb91f48fda76f322280f6f1d0dc..0422ad9dff44714e65f60b3435ac664cb7d3b465 100644
--- a/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
@@ -878,6 +878,7 @@ int VP8EncoderImpl::GetEncodedPartitions(const VideoFrame& input_image) {
     encoded_images_[encoder_idx].capture_time_ms_ =
         input_image.render_time_ms();
     encoded_images_[encoder_idx].rotation_ = input_image.rotation();
+    encoded_images_[encoder_idx].content_type_ = input_image.content_type();
 
     int qp = -1;
     vpx_codec_control(&encoders_[encoder_idx], VP8E_GET_LAST_QUANTIZER_64, &qp);
@@ -1124,7 +1125,8 @@ int VP8DecoderImpl::ReturnFrame(const vpx_image_t* img,
                    buffer->MutableDataV(), buffer->StrideV(),
                    img->d_w, img->d_h);
 
-  VideoFrame decoded_image(buffer, timestamp, 0, kVideoRotation_0);
+  VideoFrame decoded_image(buffer, timestamp, 0, kVideoRotation_0,
+                           VideoContentType::kDefault);
   decoded_image.set_ntp_time_ms(ntp_time_ms);
   decode_complete_callback_->Decoded(decoded_image, rtc::Optional<int32_t>(),
                                      rtc::Optional<uint8_t>(qp));