[gnome-games] gamepad: Add GamepadCallback delegate

[Adrien Plazas <aplazas src gnome org>]

commit 671cb71607c1dbce954cac71ec39e1eecc342972
Author: Megh Parikh <meghprkh gmail com>
Date:   Mon Jul 18 22:44:14 2016 +0530

    gamepad: Add GamepadCallback delegate
    
    This delegate is used by GamepadMonitor.
    
    This is part of a series of commits to add gamepad support.

 src/gamepad/gamepad-callbacks.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/gamepad/gamepad-callbacks.vala b/src/gamepad/gamepad-callbacks.vala
index a5faf4d..b822381 100644
--- a/src/gamepad/gamepad-callbacks.vala
+++ b/src/gamepad/gamepad-callbacks.vala
@@ -1,5 +1,6 @@
 // This file is part of GNOME Games. License: GPLv3
 
 namespace Games {
+       private delegate void GamepadCallback (Gamepad gamepad);
        private delegate void RawGamepadCallback (RawGamepad raw_gamepad);
 }