fixes #314, super method tear offs

lib/src/codegen/js_codegen.dart

Index: lib/src/codegen/js_codegen.dart
diff --git a/lib/src/codegen/js_codegen.dart b/lib/src/codegen/js_codegen.dart
index 3b421f4e912f79c3d799512b4a9f32ca311efe4d..048bb5c8508f6633a0b5a295e4f98eedc4740c58 100644
--- a/lib/src/codegen/js_codegen.dart
+++ b/lib/src/codegen/js_codegen.dart
@@ -2644,7 +2644,9 @@ class JSCodegenVisitor extends GeneralizingAstVisitor with ClosureAnnotator {
     String code;
     if (member != null && member is MethodElement && !isStatic) {
       // Tear-off methods: explicitly bind it.
-      if (_requiresStaticDispatch(target, memberId.name)) {
+      if (target is SuperExpression) {
+        return js.call('dart.bind(this, #, #.#)', [name, _visit(target), name]);
+      } else if (_requiresStaticDispatch(target, memberId.name)) {
         var type = member.type;
         var clos = js.call('dart.#.bind(#)', [name, _visit(target)]);
         return js.call('dart.fn(#, #)', [clos, _emitFunctionTypeParts(type)]);