447ddebd68
This CL also lifts the restriction that classes could not extends or implement 'Function'. BUG=https://code.google.com/p/dart/issues/detail?id=10849 BUG=https://code.google.com/p/dart/issues/detail?id=12411 TEST=tests/language/bound_closure_equality_test.dart, tests/language/black_listed_test.dart R=iposva@google.com Review URL: https://codereview.chromium.org//22425006 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@26114 260f80e4-7a28-3924-810f-c04153c831b5