[glibmm] Add ActionMap to gio_extra_objects.defs.

[Murray Cumming <murrayc src gnome org>]

commit ae1294a598bb3a255a3d5a4ca31bf22fba11e711
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Mar 5 13:19:01 2014 +0100

    Add ActionMap to gio_extra_objects.defs.
    
    This lets the documentation generator guess the appropriate C++ method
    name.

 gio/src/gio_extra_objects.defs |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gio/src/gio_extra_objects.defs b/gio/src/gio_extra_objects.defs
index fe3c161..acfab9a 100644
--- a/gio/src/gio_extra_objects.defs
+++ b/gio/src/gio_extra_objects.defs
@@ -18,6 +18,12 @@
   (gtype-id "G_TYPE_ACTION_GROUP")
 )
 
+(define-object ActionMap
+  (in-module "Gio")
+  (c-name "GActionMap")
+  (gtype-id "G_TYPE_ACTION_MAP")
+)
+
 (define-object DBusConnection
   (in-module "Gio")
   (c-name "GDBusConnection")