Clean up tile deletion

cc/tiles/tile.h

Index: cc/tiles/tile.h
diff --git a/cc/tiles/tile.h b/cc/tiles/tile.h
index aecd220b272e53d10934f38c79a3b3821cc85dd5..1bce3cd3603e9288b113ac54abaf07c93fffae91 100644
--- a/cc/tiles/tile.h
+++ b/cc/tiles/tile.h
@@ -22,11 +22,6 @@ class TileManager;
 
 class CC_EXPORT Tile {
  public:
-  class CC_EXPORT Deleter {
-   public:
-    void operator()(Tile* tile) const;
-  };
-
   class CC_EXPORT CreateInfo {
    public:
     const PictureLayerTiling* tiling;
@@ -54,6 +49,8 @@ class CC_EXPORT Tile {
 
   typedef uint64_t Id;
 
+  ~Tile();
+
   Id id() const {
     return id_;
   }
@@ -131,7 +128,6 @@ class CC_EXPORT Tile {
        int layer_id,
        int source_frame_number,
        int flags);
-  ~Tile();
 
   TileManager* const tile_manager_;
   const PictureLayerTiling* tiling_;
@@ -164,8 +160,6 @@ class CC_EXPORT Tile {
   DISALLOW_COPY_AND_ASSIGN(Tile);
 };
 
-using ScopedTilePtr = std::unique_ptr<Tile, Tile::Deleter>;
-
 }  // namespace cc
 
 #endif  // CC_TILES_TILE_H_