Revert of New rtc::VideoSinkInterface.

webrtc/media/base/videosinkinterface.h

-/*
- *  Copyright (c) 2016 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.
- */
-
-#ifndef WEBRTC_MEDIA_BASE_VIDEOSINKINTERFACE_H_
-#define WEBRTC_MEDIA_BASE_VIDEOSINKINTERFACE_H_
-
-namespace rtc {
-
-template <typename VideoFrameT>
-class VideoSinkInterface {
- public:
-  virtual void OnFrame(const VideoFrameT& frame) = 0;
-
- protected:
-  ~VideoSinkInterface() {}
-};
-
-}  // namespace rtc
-
-#endif  // WEBRTC_MEDIA_BASE_VIDEOSINKINTERFACE_H_