[gnome-music] grilo: Add method for populating playlist songs

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit d45468eb84f5702559c0d5c980d79f79a925e09a
Author: Arnel Borja <arnelborja src gnome org>
Date:   Thu May 29 20:45:58 2014 +0800

    grilo: Add method for populating playlist songs

 gnomemusic/grilo.py |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gnomemusic/grilo.py b/gnomemusic/grilo.py
index 0970ea1..6761d7f 100644
--- a/gnomemusic/grilo.py
+++ b/gnomemusic/grilo.py
@@ -194,6 +194,10 @@ class Grilo(GObject.GObject):
             callback(source, None, None, 0, None)
 
     @log
+    def populate_playlist_songs(self, playlist, callback, count=-1):
+        self.populate_items(Query.playlist_songs(playlist.get_id()), 0, callback, count)
+
+    @log
     def populate_custom_query(self, query, callback, count=-1, data=None):
         self.populate_items(query, 0, callback, count, data)