Delete VideoReceiveStream::Config::pre_render_callback.

webrtc/common_video/include/frame_callback.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 32 matching lines @@
         timestamp_(timestamp) {}
 
   const uint8_t* data_;
   const size_t length_;
   const FrameType frame_type_;
   const uint32_t encoded_width_;
   const uint32_t encoded_height_;
   const uint32_t timestamp_;
 };
 
-class I420FrameCallback {
- public:
-  // This function is called with a I420 frame allowing the user to modify the
-  // frame content.
-  virtual void FrameCallback(VideoFrame* video_frame) = 0;
-
- protected:
-  virtual ~I420FrameCallback() {}
-};
-
 class EncodedFrameObserver {
  public:
   virtual void EncodedFrameCallback(const EncodedFrame& encoded_frame) = 0;
   virtual void OnEncodeTiming(int64_t capture_ntp_ms, int encode_duration_ms) {}
 
  protected:
   virtual ~EncodedFrameObserver() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_VIDEO_INCLUDE_FRAME_CALLBACK_H_