Make painting a single frame a permanent API on VideoRendererSink.

media/blink/video_frame_compositor.h

Index: media/blink/video_frame_compositor.h
diff --git a/media/blink/video_frame_compositor.h b/media/blink/video_frame_compositor.h
index b116e4f69883d5fb3f36f8ae65a2a9ea7915d5ff..68a4d79fe173a3798a93ecf915a6ead03e70fad3 100644
--- a/media/blink/video_frame_compositor.h
+++ b/media/blink/video_frame_compositor.h
@@ -75,8 +75,7 @@ class MEDIA_BLINK_EXPORT VideoFrameCompositor
   // same thread (typically the media thread).
   void Start(RenderCallback* callback) override;
   void Stop() override;
-  void PaintFrameUsingOldRenderingPath(
-      const scoped_refptr<VideoFrame>& frame) override;
+  void PaintSingleFrame(const scoped_refptr<VideoFrame>& frame) override;
 
   // Returns |current_frame_| if |client_| is set.  If no |client_| is set,
   // |is_background_rendering_| is true, and |callback_| is set, it requests a
@@ -94,7 +93,7 @@ class MEDIA_BLINK_EXPORT VideoFrameCompositor
   // Returns the timestamp of the current (possibly stale) frame, or
   // base::TimeDelta() if there is no current frame. This method may be called
   // from the media thread as long as the VFC is stopped. (Assuming that
-  // PaintFrameUsingOldRenderingPath() is not also called while stopped.)
+  // PaintSingleFrame() is not also called while stopped.)
   base::TimeDelta GetCurrentFrameTimestamp() const;
 
   void set_tick_clock_for_testing(std::unique_ptr<base::TickClock> tick_clock) {