Check closure data for serialization

pkg/compiler/lib/src/serialization/modelz.dart

Index: pkg/compiler/lib/src/serialization/modelz.dart
diff --git a/pkg/compiler/lib/src/serialization/modelz.dart b/pkg/compiler/lib/src/serialization/modelz.dart
index 8428777acd0ad9b3b80cc9fdd1e8f0f8bfb4633e..82d02af543c8d63ae3e934af3a2e81527828fc21 100644
--- a/pkg/compiler/lib/src/serialization/modelz.dart
+++ b/pkg/compiler/lib/src/serialization/modelz.dart
@@ -82,13 +82,13 @@ abstract class ElementZ extends Element with ElementCommon {
   bool get isClosure => false;
 
   @override
-  bool get isConst => _unsupported('isConst');
+  bool get isConst => false;
 
   @override
   bool get isDeferredLoaderGetter => false;
 
   @override
-  bool get isFinal => _unsupported('isFinal');
+  bool get isFinal => false;
 
   @override
   bool get isInstanceMember => false;
@@ -1906,6 +1906,9 @@ class LocalParameterElementZ extends ParameterElementZ
   }
 
   @override
+  bool get isLocal => true;
+
+  @override
   ElementKind get kind => ElementKind.PARAMETER;
 }