Clean-up the registration of plugins

pkg/analyzer/test/generated/element_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 engine.element_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show AnalysisContext, AnalysisOptionsImpl;
@@ skipping 2007 matching lines @@
 
 @reflectiveTest
 class InterfaceTypeImplTest extends EngineTestCase {
   /**
    * The type provider used to access the types.
    */
   TestTypeProvider _typeProvider;
 
   @override
   void setUp() {
+    super.setUp();
     _typeProvider = new TestTypeProvider();
   }
 
   void test_computeLongestInheritancePathToObject_multipleInterfacePaths() {
     //
     //   Object
     //     |
     //     A
     //    / \
     //   B   C
@@ skipping 2232 matching lines @@
 }
 
 class _FunctionTypeImplTest_isSubtypeOf_baseCase_classFunction
     extends InterfaceTypeImpl {
   _FunctionTypeImplTest_isSubtypeOf_baseCase_classFunction(ClassElement arg0)
       : super(arg0);
 
   @override
   bool get isDartCoreFunction => true;
 }