[vala/staging] gstreamer: Update from 1.17.0+ git master

[Rico Tzschichholz <ricotz src gnome org>]

commit 9a0cc131e6a5b0e596de49792d990bae89212dd8
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Sep 30 08:37:05 2019 +0200

    gstreamer: Update from 1.17.0+ git master

 vapi/gstreamer-audio-1.0.vapi | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/vapi/gstreamer-audio-1.0.vapi b/vapi/gstreamer-audio-1.0.vapi
index e41a340ac..bffa24ff1 100644
--- a/vapi/gstreamer-audio-1.0.vapi
+++ b/vapi/gstreamer-audio-1.0.vapi
@@ -444,16 +444,24 @@ namespace Gst {
                        [CCode (has_construct_function = false)]
                        protected Sink ();
                        [NoWrapper]
+                       public virtual void clear_all ();
+                       [NoWrapper]
                        public virtual bool close ();
                        [NoWrapper]
                        public virtual uint delay ();
                        [NoWrapper]
                        public virtual bool open ();
                        [NoWrapper]
+                       public virtual void pause ();
+                       [NoWrapper]
                        public virtual bool prepare (Gst.Audio.RingBufferSpec spec);
                        [NoWrapper]
                        public virtual void reset ();
                        [NoWrapper]
+                       public virtual void resume ();
+                       [NoWrapper]
+                       public virtual void stop ();
+                       [NoWrapper]
                        public virtual bool unprepare ();
                        [NoWrapper]
                        public virtual int write ([CCode (array_length_cname = "length", array_length_pos = 
1.1, array_length_type = "guint", type = "gpointer")] uint8[] data);