Enable async support

pkg/analysis_server/lib/src/domain_analysis.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 domain.analysis;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/computer_hover.dart';
@@ skipping 157 matching lines @@
   }
 
   /**
    * Implement the 'analysis.updateOptions' request.
    */
   Response updateOptions(Request request) {
     // options
     var params = new AnalysisUpdateOptionsParams.fromRequest(request);
     AnalysisOptions newOptions = params.options;
     List<OptionUpdater> updaters = new List<OptionUpdater>();
-    // TODO(paulberry): analyzeAngular and analyzePolymer are not in the API.
-//    if (newOptions.analyzeAngular != null) {
-//      updaters.add((engine.AnalysisOptionsImpl options) {
-//        options.analyzeAngular = newOptions.analyzeAngular;
-//      });
-//    }
-//    if (newOptions.analyzePolymer != null) {
-//      updaters.add((engine.AnalysisOptionsImpl options) {
-//        options.analyzePolymer = newOptions.analyzePolymer;
-//      });
-//    }
-    if (newOptions.enableAsync != null) {
-      updaters.add((engine.AnalysisOptionsImpl options) {
-        options.enableAsync = newOptions.enableAsync;
-      });
-    }
     if (newOptions.enableDeferredLoading != null) {
       updaters.add((engine.AnalysisOptionsImpl options) {
         options.enableDeferredLoading = newOptions.enableDeferredLoading;
       });
     }
     if (newOptions.enableEnums != null) {
       updaters.add((engine.AnalysisOptionsImpl options) {
         options.enableEnum = newOptions.enableEnums;
       });
     }
     if (newOptions.generateDart2jsHints != null) {
       updaters.add((engine.AnalysisOptionsImpl options) {
         options.dart2jsHint = newOptions.generateDart2jsHints;
       });
     }
     if (newOptions.generateHints != null) {
       updaters.add((engine.AnalysisOptionsImpl options) {
         options.hint = newOptions.generateHints;
       });
     }
     server.updateOptions(updaters);
     return new AnalysisUpdateOptionsResult().toResponse(request.id);
   }
 }