Enable async support

pkg/analyzer/test/generated/non_error_resolver_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.non_error_resolver_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 279 matching lines @@
 }''');
     addNamedSource("/lib1.dart", r'''
 library lib1;
 bool x = false;''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_asyncForInWrongContext_async() {
-    resetWithAsync();
     Source source = addSource(r'''
 f(list) async {
   await for (var e in list) {
   }
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_asyncForInWrongContext_asyncStar() {
-    resetWithAsync();
     Source source = addSource(r'''
 f(list) async* {
   await for (var e in list) {
   }
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_awaitInWrongContext_async() {
-    resetWithAsync();
     Source source = addSource(r'''
 f(x, y) async {
   return await x + await y;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_awaitInWrongContext_asyncStar() {
-    resetWithAsync();
     Source source = addSource(r'''
 f(x, y) async* {
   yield await x + await y;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_breakWithoutLabelInSwitch() {
@@ skipping 3478 matching lines @@
     Source source = addSource(r'''
 class A {
   A() { return; }
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_returnInGenerator_async() {
-    resetWithAsync();
     Source source = addSource(r'''
 f() async {
   return 0;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_returnInGenerator_sync() {
     Source source = addSource(r'''
 f() {
   return 0;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_returnOfInvalidType_async() {
-    AnalysisOptionsImpl options =
-        new AnalysisOptionsImpl.con1(analysisContext2.analysisOptions);
-    options.enableAsync = true;
-    resetWithOptions(options);
     Source source = addSource(r'''
 import 'dart:async';
 class A {
   Future<int> m() async {
     return 0;
   }
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
@@ skipping 889 matching lines @@
     Source source = addSource(r'''
 class A {
   set x(a) {}
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_yieldEachInNonGenerator_asyncStar() {
-    resetWithAsync();
     Source source = addSource(r'''
 f() async* {
   yield* 0;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_yieldEachInNonGenerator_syncStar() {
-    resetWithAsync();
     Source source = addSource(r'''
 f() sync* {
   yield* 0;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_yieldInNonGenerator_asyncStar() {
-    resetWithAsync();
     Source source = addSource(r'''
 f() async* {
   yield 0;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_yieldInNonGenerator_syncStar() {
-    resetWithAsync();
     Source source = addSource(r'''
 f() sync* {
   yield 0;
 }''');
     resolve(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void _check_wrongNumberOfParametersForOperator(String name,
       String parameters) {
     Source source = addSource("""
 class A {
   operator $name($parameters) {}
 }""");
     resolve(source);
     assertNoErrors(source);
     verify([source]);
     reset();
   }
 
   void _check_wrongNumberOfParametersForOperator1(String name) {
     _check_wrongNumberOfParametersForOperator(name, "a");
   }
 }