Register deserialized lazy statics.

tests/compiler/dart2js/serialization/model_test.dart

Index: tests/compiler/dart2js/serialization/model_test.dart
diff --git a/tests/compiler/dart2js/serialization/model_test.dart b/tests/compiler/dart2js/serialization/model_test.dart
index 20caea10cc3ceed7acaeff57f4a57ef64adbdf73..0a387616f433a3e733abb38e343daafb5cd1a05d 100644
--- a/tests/compiler/dart2js/serialization/model_test.dart
+++ b/tests/compiler/dart2js/serialization/model_test.dart
@@ -13,6 +13,7 @@ import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/compiler.dart';
 import 'package:compiler/src/elements/elements.dart';
 import 'package:compiler/src/filenames.dart';
+import 'package:compiler/src/js_backend/js_backend.dart';
 import 'package:compiler/src/serialization/equivalence.dart';
 import 'package:compiler/src/tree/nodes.dart';
 import 'package:compiler/src/universe/class_set.dart';
@@ -117,6 +118,16 @@ Future checkModels(
       compilerDeserialized.world.getClassHierarchyNode(
           compilerDeserialized.coreClasses.objectClass),
       verbose: verbose);
+
+  JavaScriptBackend backend1 = compilerNormal.backend;
+  JavaScriptBackend backend2 = compilerDeserialized.backend;
+  checkSets(
+      backend1.constants.lazyStatics,
+      backend2.constants.lazyStatics,
+      "Lazy statics",
+      areElementsEquivalent,
+      verbose: verbose);
+
 }
 
 void checkElements(