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

ui/ozone/platform/drm/common/drm_util.h

Index: ui/ozone/platform/drm/common/drm_util.h
diff --git a/ui/ozone/platform/drm/common/drm_util.h b/ui/ozone/platform/drm/common/drm_util.h
index 9ea934b27e56db304da642bdeee5c6952ae73fe8..fc098e9efb55fcff54d8075e3b1ab0221ea8b071 100644
--- a/ui/ozone/platform/drm/common/drm_util.h
+++ b/ui/ozone/platform/drm/common/drm_util.h
@@ -8,6 +8,7 @@
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
+#include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
 #include "ui/ozone/platform/drm/common/scoped_drm_types.h"
 
 typedef struct _drmModeModeInfo drmModeModeInfo;
@@ -39,6 +40,17 @@ ScopedVector<HardwareDisplayControllerInfo> GetAvailableDisplayControllerInfos(
 
 bool SameMode(const drmModeModeInfo& lhs, const drmModeModeInfo& rhs);
 
+DisplayMode_Params CreateDisplayModeParams(const drmModeModeInfo& mode);
+
+// |info| provides the DRM information related to the display, |fd| is the
+// connection to the DRM device and |index| provides a unique identifier for the
+// display. |index| will be used to generate the display id (it may be the id if
+// the monitor's EDID lacks the necessary identifiers).
+DisplaySnapshot_Params CreateDisplaySnapshotParams(
+    HardwareDisplayControllerInfo* info,
+    int fd,
+    size_t display_index);
+
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_COMMON_DRM_UTIL_H_