Update WebRtcVideoFrameAdapter to new buffer interface

content/renderer/media/webrtc/webrtc_video_frame_adapter.h

 // Copyright 2015 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 CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_FRAME_ADAPTER_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_FRAME_ADAPTER_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
 #include "media/base/video_frame.h"
 #include "third_party/webrtc/api/video/video_frame_buffer.h"
 
 namespace content {
 // Thin adapter from media::VideoFrame to webrtc::VideoFrameBuffer. This
 // implementation is read-only and will return null if trying to get a
 // non-const pointer to the pixel data. This object will be accessed from
 // different threads, but that's safe since it's read-only.
 class WebRtcVideoFrameAdapter : public webrtc::VideoFrameBuffer {
  public:
   using CopyTextureFrameCallback =
       base::Callback<void(const scoped_refptr<media::VideoFrame>&,
                           scoped_refptr<media::VideoFrame>*)>;
 
   WebRtcVideoFrameAdapter(
       const scoped_refptr<media::VideoFrame>& frame,
       const CopyTextureFrameCallback& copy_texture_callback);
 
+  scoped_refptr<media::VideoFrame> getMediaVideoFrame() const { return frame_; }
+
  private:
+  Type type() const override;
   int width() const override;
   int height() const override;
 
+  // TODO(magjed): Remove Data, Stride, and native_handle() functions.
   const uint8_t* DataY() const override;
   const uint8_t* DataU() const override;
   const uint8_t* DataV() const override;
 
   int StrideY() const override;
   int StrideU() const override;
   int StrideV() const override;
 
   void* native_handle() const override;
 
-  rtc::scoped_refptr<VideoFrameBuffer> NativeToI420Buffer() override;
+  rtc::scoped_refptr<webrtc::I420BufferInterface> ToI420() override;
 
   friend class rtc::RefCountedObject<WebRtcVideoFrameAdapter>;
 
  protected:
   ~WebRtcVideoFrameAdapter() override;
 
   scoped_refptr<media::VideoFrame> frame_;
   const CopyTextureFrameCallback copy_texture_callback_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_FRAME_ADAPTER_H_