Delete deprecated and transitional stuff related to video frame refactoring.

webrtc/media/base/videoframe.h

-/*
- *  Copyright (c) 2004 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.
- */
-
-// TODO(nisse): Deprecated, replace cricket::VideoFrame with
-// webrtc::VideoFrame everywhere, then delete this file. See
-// https://bugs.chromium.org/p/webrtc/issues/detail?id=5682.
-
-#ifndef WEBRTC_MEDIA_BASE_VIDEOFRAME_H_
-#define WEBRTC_MEDIA_BASE_VIDEOFRAME_H_
-
-// TODO(nisse): Some applications expect that including this file
-// implies an include of logging.h. So keep for compatibility, until
-// this file can be deleted.
-#include "webrtc/base/logging.h"
-
-#include "webrtc/api/video/video_frame.h"
-
-// TODO(nisse): Similarly, some applications expect that including this file
-// implies a forward declaration of rtc::Thread.
-namespace rtc {
-class Thread;
-}  // namespace rtc
-
-namespace cricket {
-
-using VideoFrame = webrtc::VideoFrame;
-
-}  // namespace cricket
-
-#endif  // WEBRTC_MEDIA_BASE_VIDEOFRAME_H_