Hook up EncodedVideoSource on the browser side

media/video/capture/win/video_capture_device_mf_win.cc

Index: media/video/capture/win/video_capture_device_mf_win.cc
diff --git a/media/video/capture/win/video_capture_device_mf_win.cc b/media/video/capture/win/video_capture_device_mf_win.cc
index 113d77767631d88843578d48f3885d383892affe..2fa6c6cc588bc86151dfd1c15bda7cbcfa6de15e 100644
--- a/media/video/capture/win/video_capture_device_mf_win.cc
+++ b/media/video/capture/win/video_capture_device_mf_win.cc
@@ -307,6 +307,14 @@ bool VideoCaptureDeviceMFWin::Init() {
                                                        reader_.Receive()));
 }
 
+VideoEncodingCapability VideoCaptureDeviceMFWin::GetEncodingCapability() {
+  return VideoEncodingCapability();
+}
+
+void VideoCaptureDeviceMFWin::TryConfigureEncodedBitstream(
+    const RuntimeVideoEncodingParameters& params) {
+}
+
 void VideoCaptureDeviceMFWin::Allocate(
     int width,
     int height,