Replace SetObjectProperty / DefineObjectProperty with less powerful alternatives where relevant.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index c675fe7e0d423211669c505a2f1a7a4169a9aa31..f4768de3a9e281efd7ccd73113acdd7184c31954 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -940,8 +940,9 @@ void Genesis::HookUpGlobalObject(Handle<GlobalObject> global_object,
 
   static const PropertyAttributes attributes =
       static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE);
-  Runtime::DefineObjectProperty(builtins_global, factory()->global_string(),
-                                global_object, attributes).Assert();
+  JSObject::SetOwnPropertyIgnoreAttributes(builtins_global,
+                                           factory()->global_string(),
+                                           global_object, attributes).Assert();
   // Set up the reference from the global object to the builtins object.
   JSGlobalObject::cast(*global_object)->set_builtins(*builtins_global);
   TransferNamedProperties(global_object_from_snapshot, global_object);