Store the native display as an opaque pointer. Bug 18314459 Change-Id: I63e56d626bd1838803d1de71b417b7e40242c5e9 Reviewed-on: https://swiftshader-review.googlesource.com/4390 Reviewed-by: Nicolas Capens <capn@google.com> Tested-by: Nicolas Capens <capn@google.com>