[Chromecast] Upgrade to new CMA backend API

chromecast/media/cma/pipeline/video_pipeline_device_client_impl.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 CHROMECAST_MEDIA_CMA_PIPELINE_VIDEO_PIPELINE_DEVICE_CLIENT_IMPL_H_
-#define CHROMECAST_MEDIA_CMA_PIPELINE_VIDEO_PIPELINE_DEVICE_CLIENT_IMPL_H_
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "chromecast/public/media/media_component_device.h"
-#include "chromecast/public/media/video_pipeline_device.h"
-
-namespace base {
-class SingleThreadTaskRunner;
-}
-
-namespace chromecast {
-namespace media {
-
-// Helper for implementing VideoPipelineDevice::VideoClient with
-// a base::Callback.
-class VideoPipelineDeviceClientImpl : public VideoPipelineDevice::VideoClient {
- public:
-  typedef base::Callback<void(const Size&)> SizeChangeCB;
-
-  VideoPipelineDeviceClientImpl(const SizeChangeCB& size_change_cb);
-  ~VideoPipelineDeviceClientImpl() override;
-
-  void OnNaturalSizeChanged(const Size& size) override;
-
- private:
-  SizeChangeCB size_change_cb_;
-  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-};
-
-}  // namespace media
-}  // namespace chromecast
-
-#endif  // CHROMECAST_MEDIA_CMA_PIPELINE_VIDEO_PIPELINE_DEVICE_CLIENT_IMPL_H_