More fixes in the Fixes service.

pkg/analysis_testing/lib/mock_sdk.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.mock_sdk;
 
 import 'package:analyzer/file_system/file_system.dart' as resource;
 import 'package:analyzer/file_system/memory_file_system.dart' as resource;
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
@@ skipping 15 matching lines @@
           class Symbol {}
           class Type {}
 
           class String extends Object {}
           class bool extends Object {}
           abstract class num extends Object {
             num operator +(num other);
             num operator -(num other);
             num operator *(num other);
             num operator /(num other);
+            int toInt();
           }
           abstract class int extends num {
             int operator -();
           }
           class double extends num {}
           class DateTime extends Object {}
           class Null extends Object {}
 
           class Deprecated extends Object {
             final String expires;
             const Deprecated(this.expires);
           }
           const Object deprecated = const Deprecated("next release");
 
           abstract class List<E> extends Object {
             void add(E value);
             E operator [](int index);
             void operator []=(int index, E value);
           }
           class Map<K, V> extends Object {}
 
           void print(Object object) {}
           ''',
 
       "/lib/html/dartium/html_dartium.dart": '''
           library dart.html;
           class HtmlElement {}
           ''',
 
+      "/lib/async/async.dart": '''
+          library dart.async;
+          class Future {
+            static Future wait(List<Future> futures) => null;
+          }
+          ''',
+
       "/lib/math/math.dart": '''
           library dart.math;
           const double E = 2.718281828459045;
           const double PI = 3.1415926535897932;
           '''
     };
 
     pathToContent.forEach((String path, String content) {
       provider.newFile(path, content);
     });
@@ skipping 32 matching lines @@
     // return null.
     return null;
   }
 
   // Not used.
   @override
   Source mapDartUri(String dartUri) {
     const Map<String, String> uriToPath = const {
       "dart:core": "/lib/core/core.dart",
       "dart:html": "/lib/html/dartium/html_dartium.dart",
+      "dart:async": "/lib/async/async.dart",
       "dart:math": "/lib/math/math.dart"
     };
 
     String path = uriToPath[dartUri];
     if (path != null) {
       resource.File file = provider.getResource(path);
       return file.createSource(UriKind.DART_URI);
     }
 
     // If we reach here then we tried to use a dartUri that's not in the
     // table above.
     throw unimplemented;
   }
 }