Martin von Zweigbergk <martinvonz@google.com> [Fri, 14 Nov 2014 05:58:59 -0800] rev 23307
largefiles: update comments to refer to the right overridden method
This cleans up leftovers from b228ad1f79d7 (largefiles: override
calculateupdates instead of manifestmerge, 2014-03-02).