pkg/compiler: fix imports

pkg/compiler/lib/src/types/types.dart

Index: pkg/compiler/lib/src/types/types.dart
diff --git a/pkg/compiler/lib/src/types/types.dart b/pkg/compiler/lib/src/types/types.dart
index 61dbabf99ad3e95fcdd57c323ca5c07ec5f3724e..d12b2bd25d832aca05bb2126fbd6540c2e5d9afc 100644
--- a/pkg/compiler/lib/src/types/types.dart
+++ b/pkg/compiler/lib/src/types/types.dart
@@ -12,15 +12,14 @@ import '../constants/values.dart' show PrimitiveConstantValue;
 import '../elements/elements.dart';
 import '../inferrer/type_graph_inferrer.dart' show TypeGraphInferrer;
 import '../tree/tree.dart';
-import '../util/util.dart';
 import '../universe/selector.dart' show Selector;
 import '../universe/universe.dart'
     show
         ReceiverConstraint,
         UniverseSelectorConstraints,
         SelectorConstraintsStrategy;
+import '../util/util.dart';
 import '../world.dart' show ClassWorld, World;
-
 import 'abstract_value_domain.dart' show AbstractValue;
 
 part 'container_type_mask.dart';