Class methods should be non enumerable

src/runtime/runtime-object.cc

Index: src/runtime/runtime-object.cc
diff --git a/src/runtime/runtime-object.cc b/src/runtime/runtime-object.cc
index 2ed2ae487e9848b84edbbbe516e139248d29f89a..1d45cb1d115987e9442b2e22a668ff0e064bb833 100644
--- a/src/runtime/runtime-object.cc
+++ b/src/runtime/runtime-object.cc
@@ -1589,30 +1589,36 @@ RUNTIME_FUNCTION(RuntimeReference_ClassOf) {
 
 RUNTIME_FUNCTION(Runtime_DefineGetterPropertyUnchecked) {
   HandleScope scope(isolate);
-  DCHECK(args.length() == 3);
+  DCHECK(args.length() == 4);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
   CONVERT_ARG_HANDLE_CHECKED(Name, name, 1);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, getter, 2);
+  CONVERT_SMI_ARG_CHECKED(unchecked, 3);
+  RUNTIME_ASSERT((unchecked & ~(READ_ONLY | DONT_ENUM | DONT_DELETE)) == 0);
+  PropertyAttributes attrs = static_cast<PropertyAttributes>(unchecked);
 
   RETURN_FAILURE_ON_EXCEPTION(
       isolate,
       JSObject::DefineAccessor(object, name, getter,
-                               isolate->factory()->null_value(), NONE));
+                               isolate->factory()->null_value(), attrs));
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_DefineSetterPropertyUnchecked) {
   HandleScope scope(isolate);
-  DCHECK(args.length() == 3);
+  DCHECK(args.length() == 4);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
   CONVERT_ARG_HANDLE_CHECKED(Name, name, 1);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, setter, 2);
+  CONVERT_SMI_ARG_CHECKED(unchecked, 3);
+  RUNTIME_ASSERT((unchecked & ~(READ_ONLY | DONT_ENUM | DONT_DELETE)) == 0);
+  PropertyAttributes attrs = static_cast<PropertyAttributes>(unchecked);
 
   RETURN_FAILURE_ON_EXCEPTION(
       isolate,
       JSObject::DefineAccessor(object, name, isolate->factory()->null_value(),
-                               setter, NONE));
+                               setter, attrs));
   return isolate->heap()->undefined_value();
 }
 }