[gnome-games] mega-drive: Add is_mega_drive() to MegaDriveHeader

[Adrien Plazas <aplazas src gnome org>]

commit 1c67eceb8d186b3082150671933aea06f9a5c802
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Wed Aug 3 19:22:43 2016 +0200

    mega-drive: Add is_mega_drive() to MegaDriveHeader
    
    This will be used in the next commit to discriminte Mega Drive headers
    from 32X ones.

 plugins/mega-drive/src/mega-drive-header.vala |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/plugins/mega-drive/src/mega-drive-header.vala b/plugins/mega-drive/src/mega-drive-header.vala
index 11ca0ef..bdd28ef 100644
--- a/plugins/mega-drive/src/mega-drive-header.vala
+++ b/plugins/mega-drive/src/mega-drive-header.vala
@@ -97,6 +97,16 @@ private class Games.MegaDriveHeader : Object {
                        return MegaDriveSystem.INVALID;
                }
        }
+
+       public bool is_mega_drive () {
+               switch (system) {
+               case MegaDriveSystem.MEGA_DRIVE:
+               case MegaDriveSystem.MEGA_CD:
+                       return true;
+               default:
+                       return false;
+               }
+       }
 }
 
 errordomain Games.MegaDriveError {