898a3d8867
This implements part of issue 11495. BUG= http://dartbug.com/11495 R=regis@google.com Committed: https://code.google.com/p/dart/source/detail?r=24731 Reverted: https://code.google.com/p/dart/source/detail?r=24733 Review URL: https://codereview.chromium.org//18600007 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24736 260f80e4-7a28-3924-810f-c04153c831b5