Delete class webrtc::VideoRenderer and its header file.

webrtc/media/engine/webrtcvideoengine2.h

Index: webrtc/media/engine/webrtcvideoengine2.h
diff --git a/webrtc/media/engine/webrtcvideoengine2.h b/webrtc/media/engine/webrtcvideoengine2.h
index 27eadb299ae69160ba7d9a41ca38c74463f4b691..e583a54594c9e026e9efe8c1f060043d5c319fef 100644
--- a/webrtc/media/engine/webrtcvideoengine2.h
+++ b/webrtc/media/engine/webrtcvideoengine2.h
@@ -31,7 +31,6 @@
 #include "webrtc/transport.h"
 #include "webrtc/video_frame.h"
 #include "webrtc/video_receive_stream.h"
-#include "webrtc/video_renderer.h"
 #include "webrtc/video_send_stream.h"
 
 namespace webrtc {
@@ -394,8 +393,10 @@ class WebRtcVideoChannel2 : public VideoMediaChannel, public webrtc::Transport {
 
   // Wrapper for the receiver part, contains configs etc. that are needed to
   // reconstruct the underlying VideoReceiveStream. Also serves as a wrapper
-  // between webrtc::VideoRenderer and cricket::VideoRenderer.
-  class WebRtcVideoReceiveStream : public webrtc::VideoRenderer {
+  // between rtc::VideoSinkInterface<webrtc::VideoFrame> and
+  // cricket::VideoRenderer.
+  class WebRtcVideoReceiveStream
+      : public rtc::VideoSinkInterface<webrtc::VideoFrame> {
    public:
     WebRtcVideoReceiveStream(
         webrtc::Call* call,
@@ -403,8 +404,7 @@ class WebRtcVideoChannel2 : public VideoMediaChannel, public webrtc::Transport {
         const webrtc::VideoReceiveStream::Config& config,
         WebRtcVideoDecoderFactory* external_decoder_factory,
         bool default_stream,
-        const std::vector<VideoCodecSettings>& recv_codecs,
-        bool disable_prerenderer_smoothing);
+        const std::vector<VideoCodecSettings>& recv_codecs);
     ~WebRtcVideoReceiveStream();
 
     const std::vector<uint32_t>& GetSsrcs() const;
@@ -418,7 +418,6 @@ class WebRtcVideoChannel2 : public VideoMediaChannel, public webrtc::Transport {
     void SetRecvParameters(const ChangedRecvParameters& recv_params);
 
     void OnFrame(const webrtc::VideoFrame& frame) override;
-    bool SmoothsRenderedFrames() const override;
     bool IsDefaultStream() const;
 
     void SetSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink);
@@ -459,8 +458,6 @@ class WebRtcVideoChannel2 : public VideoMediaChannel, public webrtc::Transport {
     WebRtcVideoDecoderFactory* const external_decoder_factory_;
     std::vector<AllocatedDecoder> allocated_decoders_;
 
-    const bool disable_prerenderer_smoothing_;
-
     rtc::CriticalSection sink_lock_;
     rtc::VideoSinkInterface<cricket::VideoFrame>* sink_ GUARDED_BY(sink_lock_);
     int last_width_ GUARDED_BY(sink_lock_);