9c7a91d3fb
equals method replaced by operator == in version 0.11. DartType and Link equals updated accordingly test added. TEST=tests/compiler/dart2js/type_equals_test.dart Review URL: https://codereview.chromium.org//10917290 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12473 260f80e4-7a28-3924-810f-c04153c831b5