universal-access: Split sound keys dialog into its own widget

panels/universal-access/cc-sound-keys-dialog.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2020 Canonical Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+G_DECLARE_FINAL_TYPE (CcSoundKeysDialog, cc_sound_keys_dialog, CC, SOUND_KEYS_DIALOG, GtkDialog)
+
+CcSoundKeysDialog *cc_sound_keys_dialog_new (void);
+
+G_END_DECLS