Revert "cc: Remove Tile refcounting and RefCountedManaged."

cc/test/fake_picture_layer_tiling_client.h

Index: cc/test/fake_picture_layer_tiling_client.h
diff --git a/cc/test/fake_picture_layer_tiling_client.h b/cc/test/fake_picture_layer_tiling_client.h
index 94a600e415cf2e3c73653cc40496278bdf498fdd..76636bad6cd0d32eaa617efeeb8997a557630ab3 100644
--- a/cc/test/fake_picture_layer_tiling_client.h
+++ b/cc/test/fake_picture_layer_tiling_client.h
@@ -21,8 +21,8 @@ class FakePictureLayerTilingClient : public PictureLayerTilingClient {
   ~FakePictureLayerTilingClient() override;
 
   // PictureLayerTilingClient implementation.
-  ScopedTilePtr CreateTile(float contents_scale,
-                           const gfx::Rect& rect) override;
+  scoped_refptr<Tile> CreateTile(float contents_scale,
+                                 const gfx::Rect& rect) override;
   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override;
   TilePriority::PriorityBin GetMaxTilePriorityBin() const override;