R=ricow@google.com Review URL: https://codereview.chromium.org//28773003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28857 260f80e4-7a28-3924-810f-c04153c831b5
R=devoncarew@google.com, ricow@google.com Review URL: https://codereview.chromium.org//16831019 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24271 260f80e4-7a28-3924-810f-c04153c831b5