Implement DRM Native Pixmap using prime buffer

ui/ozone/platform/drm/BUILD.gn

Index: ui/ozone/platform/drm/BUILD.gn
diff --git a/ui/ozone/platform/drm/BUILD.gn b/ui/ozone/platform/drm/BUILD.gn
index a9be8cdbca5a3d1f372efe836dd1a15280640f52..dc3c9c4a20c06eed9ba9aee81cb85ee39c85987b 100644
--- a/ui/ozone/platform/drm/BUILD.gn
+++ b/ui/ozone/platform/drm/BUILD.gn
@@ -26,6 +26,8 @@ source_set("gbm") {
   sources = [
     "client_native_pixmap_factory_gbm.cc",
     "client_native_pixmap_factory_gbm.h",
+    "common/client_native_pixmap_dmabuf.cc",
+    "common/client_native_pixmap_dmabuf.h",
     "common/drm_util.cc",
     "common/drm_util.h",
     "common/scoped_drm_types.cc",
@@ -153,15 +155,6 @@ source_set("gbm") {
       "gpu/hardware_display_plane_manager_atomic.h",
     ]
   }
-
-  if (use_vgem_map) {
-    configs += [ "//ui/ozone:vgem_map" ]
-
-    sources += [
-      "common/client_native_pixmap_vgem.cc",
-      "common/client_native_pixmap_vgem.h",
-    ]
-  }
 }
 
 source_set("gbm_unittests") {