Enable enum and deferred import support

pkg/analysis_server/test/abstract_context.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 testing.abstract_context;
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
@@ skipping 63 matching lines @@
   }
 
   CompilationUnit resolveLibraryUnit(Source source) {
     return context.resolveCompilationUnit2(source, source);
   }
 
   void setUp() {
     resourceResolver = new ResourceUriResolver(provider);
     context = AnalysisEngine.instance.createAnalysisContext();
     context.sourceFactory = new SourceFactory([SDK_RESOLVER, resourceResolver]);
-    {
-      AnalysisOptionsImpl options =
-          new AnalysisOptionsImpl.con1(context.analysisOptions);
-      options.enableAsync = true;
-      options.enableEnum = true;
-      context.analysisOptions = options;
-    }
   }
 
   void tearDown() {
     context = null;
     provider = null;
   }
 }
 
 
 /**
  * Wraps the given [_ElementVisitorFunction] into an instance of
  * [engine.GeneralizingElementVisitor].
  */
 class _ElementVisitorFunctionWrapper extends GeneralizingElementVisitor {
   final _ElementVisitorFunction function;
   _ElementVisitorFunctionWrapper(this.function);
   visitElement(Element element) {
     function(element);
     super.visitElement(element);
   }
 }