| Index: sdk/lib/_internal/compiler/implementation/lib/constant_map.dart | 
| diff --git a/sdk/lib/_internal/compiler/implementation/lib/constant_map.dart b/sdk/lib/_internal/compiler/implementation/lib/constant_map.dart | 
| index 75446c7b91e83c20ae4d733d69f0966924346cdb..625e0ed7cf8e3e744387518d9195d406952954d8 100644 | 
| --- a/sdk/lib/_internal/compiler/implementation/lib/constant_map.dart | 
| +++ b/sdk/lib/_internal/compiler/implementation/lib/constant_map.dart | 
| @@ -35,7 +35,8 @@ class ConstantMap<V> implements Map<String, V> { | 
| } | 
|  | 
| Iterable<V> get values { | 
| -    return _keys.map((String key) => this[key]); | 
| +    // TODO(floitsch): don't wrap the map twice. | 
| +    return keys.mappedBy((String key) => this[key]); | 
| } | 
|  | 
| bool get isEmpty => length == 0; | 
|  |