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

webrtc/api/video/video_frame.cc

Index: webrtc/api/video/video_frame.cc
diff --git a/webrtc/api/video/video_frame.cc b/webrtc/api/video/video_frame.cc
index b2647461c73b67d1fba827390da9633146aca18a..bd91168d6eb45870785e6c92186c37eedc04408f 100644
--- a/webrtc/api/video/video_frame.cc
+++ b/webrtc/api/video/video_frame.cc
@@ -17,22 +17,26 @@ namespace webrtc {
 
 VideoFrame::VideoFrame(const rtc::scoped_refptr<VideoFrameBuffer>& buffer,
                        webrtc::VideoRotation rotation,
+                       webrtc::VideoContentTypeId content_type,
                        int64_t timestamp_us)
     : video_frame_buffer_(buffer),
       timestamp_rtp_(0),
       ntp_time_ms_(0),
       timestamp_us_(timestamp_us),
-      rotation_(rotation) {}
+      rotation_(rotation),
+      content_type_(content_type) {}
 
 VideoFrame::VideoFrame(const rtc::scoped_refptr<VideoFrameBuffer>& buffer,
                        uint32_t timestamp,
                        int64_t render_time_ms,
-                       VideoRotation rotation)
+                       VideoRotation rotation,
+                       VideoContentTypeId content_type)
     : video_frame_buffer_(buffer),
       timestamp_rtp_(timestamp),
       ntp_time_ms_(0),
       timestamp_us_(render_time_ms * rtc::kNumMicrosecsPerMillisec),
-      rotation_(rotation) {
+      rotation_(rotation),
+      content_type_(content_type) {
   RTC_DCHECK(buffer);
 }