Until we plan to publish these, it helps tools track what are our public
packages
Change-Id: I5bb692fd6f3da5cfdc9b759d55375435c7885b83
Reviewed-on: https://dart-review.googlesource.com/c/87220
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Kevin Moore <kevmoo@google.com>