update V8 to TOT snapshot branch
diff --git a/src/handles.h b/src/handles.h
index caa9966..7902909 100644
--- a/src/handles.h
+++ b/src/handles.h
@@ -245,6 +245,8 @@
 
 Handle<Object> GetPrototype(Handle<Object> obj);
 
+Handle<Object> SetPrototype(Handle<JSObject> obj, Handle<Object> value);
+
 // Return the object's hidden properties object. If the object has no hidden
 // properties and create_if_needed is true, then a new hidden property object
 // will be allocated. Otherwise the Heap::undefined_value is returned.