Async is no longer optional

pkg/analysis_server/lib/src/status/get_handler.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 analysis_server.src.status.get_handler;
 
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:io';
 import 'dart:math';
@@ skipping 28 matching lines @@
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_collection.dart';
 import 'package:analyzer/src/generated/utilities_general.dart';
 import 'package:analyzer/src/services/lint.dart';
 import 'package:analyzer/src/task/dart.dart';
 import 'package:analyzer/src/task/driver.dart';
 import 'package:analyzer/src/task/html.dart';
 import 'package:analyzer/src/task/options.dart';
-import 'package:analyzer/src/task/options.dart' show CONFIGURED_ERROR_PROCESSORS;
+import 'package:analyzer/src/task/options.dart'
+    show CONFIGURED_ERROR_PROCESSORS;
 import 'package:analyzer/task/dart.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/html.dart';
 import 'package:analyzer/task/model.dart';
 import 'package:plugin/plugin.dart';
 
 /**
  * A function that can be used to generate HTML output into the given [buffer].
  * The HTML that is generated must be valid (special characters must already be
  * encoded).
@@ skipping 1340 matching lines @@
     void writeOptions(StringBuffer buffer, AnalysisOptionsImpl options,
         {void writeAdditionalOptions(StringBuffer buffer)}) {
       if (options == null) {
         buffer.write('<p>No option information available.</p>');
         return;
       }
       buffer.write('<p>');
       _writeOption(
           buffer, 'Analyze functon bodies', options.analyzeFunctionBodies);
       _writeOption(buffer, 'Cache size', options.cacheSize);
-      _writeOption(buffer, 'Enable async support', options.enableAsync);
       _writeOption(
           buffer, 'Enable generic methods', options.enableGenericMethods);
       _writeOption(
           buffer, 'Enable strict call checks', options.enableStrictCallChecks);
       _writeOption(buffer, 'Enable super mixins', options.enableSuperMixins);
       _writeOption(buffer, 'Generate dart2js hints', options.dart2jsHint);
       _writeOption(buffer, 'Generate errors in implicit files',
           options.generateImplicitErrors);
       _writeOption(
           buffer, 'Generate errors in SDK files', options.generateSdkErrors);
@@ skipping 1316 matching lines @@
    */
   static String makeLink(
       String path, Map<String, String> params, String innerHtml,
       [bool hasError = false]) {
     Uri uri = new Uri(path: path, queryParameters: params);
     String href = HTML_ESCAPE.convert(uri.toString());
     String classAttribute = hasError ? ' class="error"' : '';
     return '<a href="$href"$classAttribute>$innerHtml</a>';
   }
 }