Make the universe parts into small libraries.

pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart

Index: pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
diff --git a/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart b/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
index cf7e1cc70355c160a08e9d235df518b2d8a30c41..d546679a536744760c2881ff0ac9f803605889c1 100644
--- a/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
+++ b/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
@@ -47,11 +47,12 @@ import '../types/types.dart' show
     ValueTypeMask;
 import '../types/constants.dart' show
     computeTypeMask;
-import '../universe/universe.dart' show
-    CallStructure,
-    Selector,
-    SideEffects,
-    TypedSelector;
+import '../universe/call_structure.dart' show
+    CallStructure;
+import '../universe/selector.dart' show
+    Selector;
+import '../universe/side_effects.dart' show
+    SideEffects;
 import '../util/util.dart' show
     ImmutableEmptySet,
     Setlet;