gnome: main window layout

Refs #66715

Change-Id: I7bc09ae7c46aca1a80a18adb3b811c968c52eaaf
diff --git a/src/ring_client_options.h b/src/ring_client_options.h
index e05e9bc..db6881e 100644
--- a/src/ring_client_options.h
+++ b/src/ring_client_options.h
@@ -33,14 +33,10 @@
 
 #include <glib.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
+G_BEGIN_DECLS
 
 GOptionContext *ring_client_options_get_context(void);
 
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
+G_END_DECLS
 
 #endif /* RING_CLIENT_OPTIONS_H_ */