Updated mediawiki/extensions
Project: mediawiki/extensions/PagedTiffHandler  bef13e53ada59c895ee5b4ec721ab10d1446befe

Make visibleMetadataField protected

Per core change, where the method will be changed from public to
protected.

Change-Id: Ia49aa6119ca54cbd8060e6ab0d67c5be4f6e565a