Convert //cc from scoped_ptr to std::unique_ptr.

cc/tiles/picture_layer_tiling_set.h

 // Copyright 2012 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 CC_TILES_PICTURE_LAYER_TILING_SET_H_
 #define CC_TILES_PICTURE_LAYER_TILING_SET_H_
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 21 matching lines @@
     LOW_RES,
     LOWER_THAN_LOW_RES
   };
   struct TilingRange {
     TilingRange(size_t start, size_t end) : start(start), end(end) {}
 
     size_t start;
     size_t end;
   };
 
-  static scoped_ptr<PictureLayerTilingSet> Create(
+  static std::unique_ptr<PictureLayerTilingSet> Create(
       WhichTree tree,
       PictureLayerTilingClient* client,
       size_t tiling_interest_area_padding,
       float skewport_target_time_in_seconds,
       int skewport_extrapolation_limit_in_content);
 
   ~PictureLayerTilingSet();
 
   const PictureLayerTilingClient* client() const { return client_; }
 
@@ skipping 129 matching lines @@
 
   void CopyTilingsAndPropertiesFromPendingTwin(
       const PictureLayerTilingSet* pending_twin_set,
       scoped_refptr<RasterSource> raster_source,
       const Region& layer_invalidation);
 
   // Remove one tiling.
   void Remove(PictureLayerTiling* tiling);
   void VerifyTilings(const PictureLayerTilingSet* pending_twin_set) const;
 
-  std::vector<scoped_ptr<PictureLayerTiling>> tilings_;
+  std::vector<std::unique_ptr<PictureLayerTiling>> tilings_;
 
   const size_t tiling_interest_area_padding_;
   const float skewport_target_time_in_seconds_;
   const int skewport_extrapolation_limit_in_content_pixels_;
   WhichTree tree_;
   PictureLayerTilingClient* client_;
 
   friend class Iterator;
   DISALLOW_COPY_AND_ASSIGN(PictureLayerTilingSet);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_PICTURE_LAYER_TILING_SET_H_