[runtime][ic] Constant field tracking support.

src/value-serializer.cc

Index: src/value-serializer.cc
diff --git a/src/value-serializer.cc b/src/value-serializer.cc
index 04c7b6364f3755cb712b6289e8cfddc8a28142ab..6e35cb89cbf29b7473b9af7058489c9ab46e7506 100644
--- a/src/value-serializer.cc
+++ b/src/value-serializer.cc
@@ -1673,8 +1673,8 @@ Maybe<uint32_t> ValueDeserializer::ReadJSObjectProperties(
                    ->NowContains(value)) {
             Handle<FieldType> value_type =
                 value->OptimalType(isolate_, expected_representation);
-            Map::GeneralizeField(target, descriptor, expected_representation,
-                                 value_type);
+            Map::GeneralizeField(target, descriptor, details.constness(),
+                                 expected_representation, value_type);
           }
           DCHECK(target->instance_descriptors()
                      ->GetFieldType(descriptor)