smoke: support named argument in annotations

Was super easy since most of the code is already there :)

R=sigmund@google.com

Review URL: https://codereview.chromium.org//306993002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@36816 260f80e4-7a28-3924-810f-c04153c831b5
5 files changed