Verifies that 2D canvases with higher than 5120x2880 resolution don't create accelerated backing stores.

 
(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 5208.00 6175.00)
  (children 1
    (GraphicsLayer
      (bounds 5208.00 6175.00)
      (contentsOpaque 1)
      (children 3
        (GraphicsLayer
          (position 8.00 52.00)
          (bounds 512.00 288.00)
          (drawsContent 1)
        )
        (GraphicsLayer
          (position 8.00 345.00)
          (bounds 5120.00 2880.00)
          (usingTiledLayer 1)
          (drawsContent 1)
        )
        (GraphicsLayer
          (position 8.00 3230.00)
          (bounds 5200.00 2900.00)
          (usingTiledLayer 1)
          (drawsContent 1)
        )
      )
    )
  )
)