Cleanup of video capture into GpuMemoryBuffer

content/browser/renderer_host/media/gpu_memory_buffer_handle.h

-// Copyright 2016 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_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_HANDLE_H_
-#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_HANDLE_H_
-
-#include "media/capture/video/video_capture_buffer_handle.h"
-
-namespace content {
-
-class GpuMemoryBufferTracker;
-
-// A simple proxy that implements the BufferHandle interface, providing
-// accessors to GpuMemoryBufferTracker's memory and properties.
-class GpuMemoryBufferBufferHandle : public media::VideoCaptureBufferHandle {
- public:
-  // |tracker| must outlive GpuMemoryBufferBufferHandle. This is ensured since
-  // a tracker is pinned until ownership of this GpuMemoryBufferBufferHandle
-  // is returned to VideoCaptureBufferPool.
-  explicit GpuMemoryBufferBufferHandle(GpuMemoryBufferTracker* tracker);
-  ~GpuMemoryBufferBufferHandle() override;
-
-  gfx::Size dimensions() const override;
-  size_t mapped_size() const override;
-  void* data(int plane) override;
-  ClientBuffer AsClientBuffer(int plane) override;
-#if defined(OS_POSIX) && !defined(OS_MACOSX)
-  base::FileDescriptor AsPlatformFile() override;
-#endif
-
- private:
-  GpuMemoryBufferTracker* const tracker_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_HANDLE_H_