base: Remove OwningMRUCache in favor of scoped_ptrs in MRUCache

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

Index: ui/ozone/platform/drm/gpu/drm_overlay_validator.h
diff --git a/ui/ozone/platform/drm/gpu/drm_overlay_validator.h b/ui/ozone/platform/drm/gpu/drm_overlay_validator.h
index fbe23d3050e381b1e695fe29fbf44fc708d4491e..4d9058f8d0ecc0546c834b45486485199c90fd64 100644
--- a/ui/ozone/platform/drm/gpu/drm_overlay_validator.h
+++ b/ui/ozone/platform/drm/gpu/drm_overlay_validator.h
@@ -70,11 +70,7 @@ class DrmOverlayValidator {
   ScanoutBufferGenerator* buffer_generator_;  // Not owned.
 
   // List of all configurations which have been validated.
-  base::MRUCacheBase<OverlayPlaneList,
-                     OverlayHintsList,
-                     std::less<OverlayPlaneList>,
-                     base::MRUCacheNullDeletor<OverlayHintsList>>
-      overlay_hints_cache_;
+  base::MRUCache<OverlayPlaneList, OverlayHintsList> overlay_hints_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmOverlayValidator);
 };