Remove WebVideoFrame, WebVideoFrameProvider, and WebVideoLayer.

webkit/media/webvideoframe_impl.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef WEBKIT_MEDIA_WEBVIDEOFRAME_IMPL_H_
-#define WEBKIT_MEDIA_WEBVIDEOFRAME_IMPL_H_
-
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebVideoFrame.h"
-
-namespace media {
-class VideoFrame;
-}
-
-namespace webkit_media {
-
-class WebVideoFrameImpl : public WebKit::WebVideoFrame {
- public:
-  WebVideoFrameImpl(scoped_refptr<media::VideoFrame> video_frame);
-  virtual ~WebVideoFrameImpl();
-
-  scoped_refptr<media::VideoFrame> video_frame;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WebVideoFrameImpl);
-};
-
-}  // namespace webkit_media
-
-#endif  // WEBKIT_MEDIA_WEBVIDEOFRAME_IMPL_H_