d3f6ce4c42
- in preparation for tracking unused optional arguments of static methods Change-Id: Iba4d8aff488f6c366b587d543b063ae742494b15 Reviewed-on: https://dart-review.googlesource.com/29981 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>