suggest only superclass elements for "super."

pkg/analysis_server/test/completion_test.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 test.completion.support;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:unittest/unittest.dart';
@@ skipping 1403 matching lines @@
 class A {
   var fa;
   ma() {}
 }
 class B extends A {
   var fb;
   mb() {}
   main() {
     super.!1
   }
-}''', <String>["1+fa", "1-fb", "1+ma", "1-mb"], failingTests: '1');
+}''', <String>["1+fa", "1-fb", "1+ma", "1-mb"]);
 
     buildTests('testCompletion_superConstructorInvocation_noNamePrefix', '''
 class A {
   A.fooA();
   A.fooB();
   A.bar();
 }
 class B extends A {
   B() : super.!1
 }''', <String>["1+fooA", "1+fooB", "1+bar"], failingTests: '1');
@@ skipping 850 matching lines @@
       } else {
         ++expectedPassCount;
         tester(testName, () {
           CompletionTestCase test = new CompletionTestCase();
           return test.runTest(spec, extraFiles);
         });
       }
     }
   }
 }