ChronoDateImpl should be named ChronoLocalDateImpl to match other classes. This is an internal non-public class, so this change has no API impact. It is desirable solely fro a neatness perspective.
See JSR 310 issue #329 ; https://github.com/ThreeTen/threeten/issues/329
See JSR 310 issue #329 ; https://github.com/ThreeTen/threeten/issues/329