Clean-up the registration of plugins

pkg/analyzer/test/generated/engine_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.engine_test;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/file_system/memory_file_system.dart';
@@ skipping 210 matching lines @@
     expect(_hasAnalysisErrorWithErrorSeverity(errors), isTrue,
         reason: "htmlSource has an error");
   }
 
   void fail_recordLibraryElements() {
     fail("Implement this");
   }
 
   @override
   void setUp() {
+    super.setUp();
     _context = new AnalysisContextImpl();
     _sourceFactory = new SourceFactory([
       new DartUriResolver(DirectoryBasedDartSdk.defaultSdk),
       new FileUriResolver()
     ]);
     _context.sourceFactory = _sourceFactory;
     AnalysisOptionsImpl options =
         new AnalysisOptionsImpl.from(_context.analysisOptions);
     options.cacheSize = 256;
     _context.analysisOptions = options;
@@ skipping 6817 matching lines @@
   @override
   bool exists() => true;
 }
 
 class _UniversalCachePartitionTest_test_setMaxCacheSize
     implements CacheRetentionPolicy {
   @override
   RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry) =>
       RetentionPriority.LOW;
 }