Handle super-method invocations in CPS->JS backend.

pkg/compiler/lib/src/js_backend/codegen/glue.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library code_generator_dependencies;
 
 import '../js_backend.dart';
 import '../../dart2jslib.dart';
 import '../../js_emitter/js_emitter.dart';
 import '../../js/js.dart' as js;
@@ skipping 71 matching lines @@
   }
 
   js.Expression closureClassConstructorAccess(ClosureClassElement element) {
     return _backend.emitter.closureClassConstructorAccess(element);
   }
 
   String instanceFieldPropertyName(Element field) {
     return _namer.instanceFieldPropertyName(field);
   }
 
+  js.Expression prototypeAccess(ClassElement e,
+                                {bool hasBeenInstantiated: false}) {
+    return _emitter.prototypeAccess(e,
+        hasBeenInstantiated: hasBeenInstantiated);
+  }
+
 }