From https://bugs.webkit.org/show_bug.cgi?id=44629. The parent is a tiled layer. When the child is a non-tiled layer and it is switched to a tiled layer, a crash occurs. This test should not crash.

(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 800.00 5114.00)
  (children 1
    (GraphicsLayer
      (bounds 800.00 5114.00)
      (contentsOpaque 1)
      (children 1
        (GraphicsLayer
          (position 8.00 72.00)
          (bounds 502.00 5002.00)
          (usingTiledLayer 1)
          (contentsOpaque 1)
          (drawsContent 1)
          (children 1
            (GraphicsLayer
              (position 51.00 101.00)
              (bounds 200.00 4800.00)
              (contentsOpaque 1)
            )
          )
        )
      )
    )
  )
)