[1/2][Ozone-Drm] Refactor GPU display management

ui/ozone/platform/drm/gpu/drm_display_snapshot.h

-// Copyright 2014 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_GPU_DRM_DISPLAY_SNAPSHOT_H_
-#define UI_OZONE_PLATFORM_DRM_GPU_DRM_DISPLAY_SNAPSHOT_H_
-
-#include "base/memory/ref_counted.h"
-#include "ui/display/types/display_snapshot.h"
-#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
-
-namespace ui {
-
-class DrmDevice;
-
-class DrmDisplaySnapshot : public DisplaySnapshot {
- public:
-  DrmDisplaySnapshot(const scoped_refptr<DrmDevice>& drm,
-                     drmModeConnector* connector,
-                     drmModeCrtc* crtc,
-                     uint32_t index);
-  ~DrmDisplaySnapshot() override;
-
-  scoped_refptr<DrmDevice> drm() const { return drm_; }
-  // Native properties of a display used by the DRM implementation in
-  // configuring this display.
-  uint32_t connector() const { return connector_; }
-  uint32_t crtc() const { return crtc_; }
-
-  // DisplaySnapshot overrides:
-  std::string ToString() const override;
-
- private:
-  scoped_refptr<DrmDevice> drm_;
-  uint32_t connector_;
-  uint32_t crtc_;
-  std::string name_;
-  bool overscan_flag_;
-
-  DISALLOW_COPY_AND_ASSIGN(DrmDisplaySnapshot);
-};
-
-}  // namespace ui
-
-#endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_DISPLAY_SNAPSHOT_H_