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

webrtc/test/frame_generator_capturer.cc

Index: webrtc/test/frame_generator_capturer.cc
diff --git a/webrtc/test/frame_generator_capturer.cc b/webrtc/test/frame_generator_capturer.cc
index 98f7a4b0ef83e66bad1d80d94f462ba7227b2cb7..1867bf99a9df6829e729ae6ba109a3d0561afe77 100644
--- a/webrtc/test/frame_generator_capturer.cc
+++ b/webrtc/test/frame_generator_capturer.cc
@@ -106,6 +106,12 @@ void FrameGeneratorCapturer::SetFakeRotation(VideoRotation rotation) {
   fake_rotation_ = rotation;
 }
 
+void FrameGeneratorCapturer::SetFakeContentType(
+    VideoContentTypeId content_type) {
+  rtc::CritScope cs(&lock_);
+  fake_video_content_type_ = content_type;
+}
+
 bool FrameGeneratorCapturer::Init() {
   // This check is added because frame_generator_ might be file based and should
   // not crash because a file moved.
@@ -127,6 +133,7 @@ void FrameGeneratorCapturer::InsertFrame() {
       VideoFrame* frame = frame_generator_->NextFrame();
       frame->set_ntp_time_ms(clock_->CurrentNtpInMilliseconds());
       frame->set_rotation(fake_rotation_);
+      frame->set_content_type(fake_video_content_type_);
       if (first_frame_capture_time_ == -1) {
         first_frame_capture_time_ = frame->ntp_time_ms();
       }