Android: Stop using VideoRenderer class

This CL updates the WebRTC code to stop using the old VideoRenderer and
VideoRenderer.I420Frame classes and instead use the new VideoSink and
VideoFrame classes.

This CL is the first step and the old classes are still left in the code
for now to keep backwards compatibility.

Bug: webrtc:9181
Change-Id: Ib0caa18cbaa2758b7859e850ddcaba003cfb06d6
Reviewed-on: https://webrtc-review.googlesource.com/71662
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22989}
diff --git a/sdk/android/api/org/webrtc/VideoFileRenderer.java b/sdk/android/api/org/webrtc/VideoFileRenderer.java
index 1b9fa48..c599491 100644
--- a/sdk/android/api/org/webrtc/VideoFileRenderer.java
+++ b/sdk/android/api/org/webrtc/VideoFileRenderer.java
@@ -25,7 +25,7 @@
  * Can be used to save the video frames to file.
  */
 @JNINamespace("webrtc::jni")
-public class VideoFileRenderer implements VideoRenderer.Callbacks, VideoSink {
+public class VideoFileRenderer implements VideoSink {
   private static final String TAG = "VideoFileRenderer";
 
   private final HandlerThread renderThread;
@@ -74,13 +74,6 @@
   }
 
   @Override
-  public void renderFrame(final VideoRenderer.I420Frame i420Frame) {
-    final VideoFrame frame = i420Frame.toVideoFrame();
-    onFrame(frame);
-    frame.release();
-  }
-
-  @Override
   public void onFrame(VideoFrame frame) {
     frame.retain();
     renderThreadHandler.post(() -> renderFrameOnRenderThread(frame));