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

webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc

Index: webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc
diff --git a/webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc b/webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc
index 0306e7e29375c3d88ed26f30de58b427843bef1e..9048035ecb26414071185566090b95b9c3ce3e7d 100644
--- a/webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc
+++ b/webrtc/media/engine/videoencodersoftwarefallbackwrapper_unittest.cc
@@ -130,7 +130,8 @@ void VideoEncoderSoftwareFallbackWrapperTest::EncodeFrame() {
   I420Buffer::SetBlack(buffer);
   std::vector<FrameType> types(1, kVideoFrameKey);
 
-  frame_.reset(new VideoFrame(buffer, 0, 0, webrtc::kVideoRotation_0));
+  frame_.reset(new VideoFrame(buffer, 0, 0, webrtc::kVideoRotation_0,
+                              webrtc::VideoContentType::kDefault));
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
             fallback_wrapper_.Encode(*frame_, nullptr, &types));
 }