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..982946331d06d3bab494c20c7cf382478472e3a5 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 +206,22 @@ 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.
+  // Some codecs produce multiple streams (VP8 only at present), each of these
+  // streams will log to a separate file. kMaxSimulcastStreams in common_types.h
+  // gives the max number of such streams. If there is no file for a stream, or
+  // the file is rtc::kInvalidPlatformFileValue, frames from that stream will
+  // not be logged.
+  // 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.
+  virtual void EnableEncodedFrameRecording(
+      const std::vector<rtc::PlatformFile>& files,
+      size_t byte_limit) = 0;
+  inline void DisableEncodedFrameRecording() {
+    EnableEncodedFrameRecording(std::vector<rtc::PlatformFile>(), 0);
+  }
+
  protected:
   virtual ~VideoSendStream() {}
 };