Expose Ivf logging through the native API

webrtc/video_send_stream.h

Index: webrtc/video_send_stream.h
diff --git a/webrtc/video_send_stream.h b/webrtc/video_send_stream.h
index afdec43c745cc2cc877b416ef5150f6d27c0cecb..5b0c041db0c1b57f427481c4e75121159d105e1e 100644
--- a/webrtc/video_send_stream.h
+++ b/webrtc/video_send_stream.h
@@ -13,8 +13,10 @@
 
 #include <map>
 #include <string>
+#include <utility>
 #include <vector>
 
+#include "webrtc/base/platform_file.h"
 #include "webrtc/common_types.h"
 #include "webrtc/common_video/include/frame_callback.h"
 #include "webrtc/config.h"
@@ -204,6 +206,15 @@ class VideoSendStream {
 
   virtual Stats GetStats() = 0;
 
+  // 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.
+  virtual void SetLogFiles(
+      rtc::PlatformFile file1 = rtc::kInvalidPlatformFileValue,
+      rtc::PlatformFile file2 = rtc::kInvalidPlatformFileValue,
+      rtc::PlatformFile file3 = rtc::kInvalidPlatformFileValue) = 0;
+
  protected:
   virtual ~VideoSendStream() {}
 };