Expose Ivf logging through the native API

webrtc/video/video_send_stream.h

Index: webrtc/video/video_send_stream.h
diff --git a/webrtc/video/video_send_stream.h b/webrtc/video/video_send_stream.h
index 932264265dddf75e3e762b6325141c0e4ae07957..d490d55f894a4a4c381b9aea3c80c9ae5e52723a 100644
--- a/webrtc/video/video_send_stream.h
+++ b/webrtc/video/video_send_stream.h
@@ -76,6 +76,16 @@ class VideoSendStream : public webrtc::VideoSendStream {
   Stats GetStats() override;
 
   typedef std::map<uint32_t, RtpState> RtpStateMap;
+
+  // Takes ownership of each file, is responsible for closing them later.
+  // Calling this method will close and finalize any current logs.
+  // Giving rtc::kInvalidPlatformFileValue in any position disables logging
+  // for the corresponding stream.
+  // If a frame to be written would make the log too large the write fails and
+  // the log is closed and finalized. A |byte_limit| of 0 means no limit.
+  void EnableEncodedFrameRecording(const std::vector<rtc::PlatformFile>& files,
+                                   size_t byte_limit) override;
+
   RtpStateMap StopPermanentlyAndGetRtpStates();
 
  private: