base: Remove OwningMRUCache in favor of scoped_ptrs in MRUCache

ui/ozone/platform/drm/gpu/drm_overlay_validator.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_GPU_DRM_OVERLAY_VALIDATOR_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_DRM_OVERLAY_VALIDATOR_H_
 
 #include "base/containers/mru_cache.h"
 #include "ui/ozone/platform/drm/gpu/overlay_plane.h"
 
@@ skipping 52 matching lines @@
   // bandwidth for |plane_list| and cache the value.
   void UpdateOverlayHintsCache(
       const scoped_refptr<DrmDevice>& drm,
       const OverlayPlaneList& plane_list,
       std::vector<scoped_refptr<ScanoutBuffer>>* reusable_buffers);
 
   DrmWindow* window_;  // Not owned.
   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);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_OVERLAY_VALIDATOR_H_