[wasm] Create a proper map for functions created from WASM.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 8605d29845dca3c913c539b73d36bbe5485123c9..1dcb0d143c0147c80e504cfcaa480bd4cb1e063b 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7562,7 +7562,11 @@ class JSFunction: public JSObject {
                                             int requested_internal_fields,
                                             int* instance_size,
                                             int* in_object_properties);
-
+  static void CalculateInstanceSizeHelper(InstanceType instance_type,
+                                          int requested_internal_fields,
+                                          int requested_in_object_properties,
+                                          int* instance_size,
+                                          int* in_object_properties);
   // Visiting policy flags define whether the code entry or next function
   // should be visited or not.
   enum BodyVisitingPolicy {