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

cc/tiles/eviction_tile_priority_queue.h

Index: cc/tiles/eviction_tile_priority_queue.h
diff --git a/cc/tiles/eviction_tile_priority_queue.h b/cc/tiles/eviction_tile_priority_queue.h
index 558c1fe939b0229a91a68ff555eed9c64cfd83b4..d97bee6a23837183a4c6031d9ca562eeb3da2c8c 100644
--- a/cc/tiles/eviction_tile_priority_queue.h
+++ b/cc/tiles/eviction_tile_priority_queue.h
@@ -32,11 +32,12 @@ class CC_EXPORT EvictionTilePriorityQueue {
   void Pop();
 
  private:
-  std::vector<scoped_ptr<TilingSetEvictionQueue>>& GetNextQueues();
-  const std::vector<scoped_ptr<TilingSetEvictionQueue>>& GetNextQueues() const;
+  std::vector<std::unique_ptr<TilingSetEvictionQueue>>& GetNextQueues();
+  const std::vector<std::unique_ptr<TilingSetEvictionQueue>>& GetNextQueues()
+      const;
 
-  std::vector<scoped_ptr<TilingSetEvictionQueue>> active_queues_;
-  std::vector<scoped_ptr<TilingSetEvictionQueue>> pending_queues_;
+  std::vector<std::unique_ptr<TilingSetEvictionQueue>> active_queues_;
+  std::vector<std::unique_ptr<TilingSetEvictionQueue>> pending_queues_;
   TreePriority tree_priority_;
 
   DISALLOW_COPY_AND_ASSIGN(EvictionTilePriorityQueue);