e50fd28ff7
New instructions: CreateBox, SetField, GetField, CreateClosureClass. The "old" instructions based on ref-cells are still in use by dart2dart: GetClosureVariable, SetClosureVariable, CreateFunction. dart2dart still does not support captured for-loop variables, but this is a separate issue. BUG= R=floitsch@google.com, kmillikin@google.com, sigurdm@google.com Review URL: https://codereview.chromium.org//831133004 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@42802 260f80e4-7a28-3924-810f-c04153c831b5