Move classses VideoCaptureDeviceClient and VideoCaptureBufferPool to media/capture/video

content/browser/renderer_host/media/video_capture_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_VIDEO_CAPTURE_BUFFER_HANDLE_H_
-#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_HANDLE_H_
-
-#include "base/files/file.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/gpu_memory_buffer.h"
-
-namespace content {
-
-// Abstraction of a pool's buffer data buffer and size for clients.
-class VideoCaptureBufferHandle {
- public:
-  virtual ~VideoCaptureBufferHandle() {}
-  virtual gfx::Size dimensions() const = 0;
-  virtual size_t mapped_size() const = 0;
-  virtual void* data(int plane) = 0;
-  virtual ClientBuffer AsClientBuffer(int plane) = 0;
-#if defined(OS_POSIX) && !defined(OS_MACOSX)
-  virtual base::FileDescriptor AsPlatformFile() = 0;
-#endif
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_HANDLE_H_