Cleanup of video capture into GpuMemoryBuffer

content/browser/renderer_host/media/gpu_memory_buffer_tracker.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_TRACKER_H_
-#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_TRACKER_H_
-
-#include "media/capture/video/video_capture_buffer_tracker.h"
-
-namespace content {
-
-// Tracker specifics for GpuMemoryBuffer. Owns GpuMemoryBuffers and its
-// associated pixel dimensions.
-class GpuMemoryBufferTracker final : public media::VideoCaptureBufferTracker {
- public:
-  GpuMemoryBufferTracker();
-  ~GpuMemoryBufferTracker() override;
-
-  bool Init(const gfx::Size& dimensions,
-            media::VideoPixelFormat format,
-            media::VideoPixelStorage storage_type,
-            base::Lock* lock) override;
-
-  std::unique_ptr<media::VideoCaptureBufferHandle> GetBufferHandle() override;
-
-  bool ShareToProcess(base::ProcessHandle process_handle,
-                      base::SharedMemoryHandle* new_handle) override;
-
-  bool ShareToProcess2(int plane,
-                       base::ProcessHandle process_handle,
-                       gfx::GpuMemoryBufferHandle* new_handle) override;
-
- private:
-  friend class GpuMemoryBufferBufferHandle;
-
-  // Owned references to GpuMemoryBuffers.
-  std::vector<std::unique_ptr<gfx::GpuMemoryBuffer>> gpu_memory_buffers_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_TRACKER_H_