0.2.8.0
Version 0.2.8.0

svn merge -r 15594:15867  https://dart.googlecode.com/svn/branches/bleeding_edge trunk
and cherry pick 15917 from bleeding edge to trunk.

git-svn-id: http://dart.googlecode.com/svn/trunk@15922 260f80e4-7a28-3924-810f-c04153c831b5