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

cc/tiles/raster_tile_priority_queue_required.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 CC_TILES_RASTER_TILE_PRIORITY_QUEUE_REQUIRED_H_
 #define CC_TILES_RASTER_TILE_PRIORITY_QUEUE_REQUIRED_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 18 matching lines @@
 
   void Build(const std::vector<PictureLayerImpl*>& active_layers,
              const std::vector<PictureLayerImpl*>& pending_layers,
              Type type);
   void BuildRequiredForDraw(
       const std::vector<PictureLayerImpl*>& active_layers);
   void BuildRequiredForActivation(
       const std::vector<PictureLayerImpl*>& active_layers,
       const std::vector<PictureLayerImpl*>& pending_layers);
 
-  std::vector<scoped_ptr<TilingSetRasterQueueRequired>> tiling_set_queues_;
+  std::vector<std::unique_ptr<TilingSetRasterQueueRequired>> tiling_set_queues_;
 
   DISALLOW_COPY_AND_ASSIGN(RasterTilePriorityQueueRequired);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_RASTER_TILE_PRIORITY_QUEUE_REQUIRED_H_