Implement DRM Native Pixmap using prime buffer

ui/ozone/platform/drm/common/client_native_pixmap_vgem.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 UI_OZONE_PLATFORM_DRM_COMMON_CLIENT_NATIVE_PIXMAP_VGEM_H_
-#define UI_OZONE_PLATFORM_DRM_COMMON_CLIENT_NATIVE_PIXMAP_VGEM_H_
-
-#include <stdint.h>
-
-#include "base/file_descriptor_posix.h"
-#include "base/macros.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/native_pixmap_handle_ozone.h"
-#include "ui/ozone/public/client_native_pixmap.h"
-
-namespace ui {
-
-class ClientNativePixmapVgem : public ClientNativePixmap {
- public:
-  static scoped_ptr<ClientNativePixmap> ImportFromDmabuf(int vgem_fd,
-                                                         int dmabuf_fd,
-                                                         const gfx::Size& size,
-                                                         int stride);
-
-  ~ClientNativePixmapVgem() override;
-
-  // Overridden from ClientNativePixmap.
-  void* Map() override;
-  void Unmap() override;
-  void GetStride(int* stride) const override;
-
- private:
-  ClientNativePixmapVgem(int vgem_fd,
-                         uint32_t vgem_bo_handle,
-                         const gfx::Size& size,
-                         int stride);
-
-  const int vgem_fd_;
-  const uint32_t vgem_bo_handle_;
-  const gfx::Size size_;
-  const int stride_;
-  void* data_;
-
-  DISALLOW_COPY_AND_ASSIGN(ClientNativePixmapVgem);
-};
-
-}  // namespace ui
-
-#endif  // UI_OZONE_PLATFORM_DRM_COMMON_CLIENT_NATIVE_PIXMAP_VGEM_H_