Use correct param ordering in header file

atom/browser/ui/message_box.h

@@ -37,8 +37,8 @@ typedef base::Callback<void(int code)> MessageBoxCallback;
 int ShowMessageBox(NativeWindow* parent_window,
                    MessageBoxType type,
                    const std::vector<std::string>& buttons,
-                   int cancel_id,
                    int default_id,
+                   int cancel_id,
                    int options,
                    const std::string& title,
                    const std::string& message,