Move VideoFrame and related declarations to webrtc/api/video.

webrtc/test/fake_videorenderer.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_TEST_FAKE_VIDEORENDERER_H_
 #define WEBRTC_TEST_FAKE_VIDEORENDERER_H_
 
+#include "webrtc/api/video/video_frame.h"
 #include "webrtc/media/base/videosinkinterface.h"
-#include "webrtc/video_frame.h"
 
 namespace webrtc {
 namespace test {
 
 class FakeVideoRenderer : public rtc::VideoSinkInterface<webrtc::VideoFrame> {
  public:
   void OnFrame(const webrtc::VideoFrame& frame) override {}
 };
 
 }  // namespace test
 }  // namespace webrtc
 
 #endif  // WEBRTC_TEST_FAKE_VIDEORENDERER_H_