Extract nested and private classes from VideoCaptureBufferPool

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_