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

[Rico Tzschichholz <ricotz src gnome org>]

commit 0f518f8018606011f2d00be9635f7187b1840f84
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu Nov 21 14:37:54 2019 +0100

    gstreamer: Update from 1.17.0+ git master

 vapi/gstreamer-1.0.vapi | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gstreamer-1.0.vapi b/vapi/gstreamer-1.0.vapi
index ce4c332ec..88811ee60 100644
--- a/vapi/gstreamer-1.0.vapi
+++ b/vapi/gstreamer-1.0.vapi
@@ -1397,7 +1397,7 @@ namespace Gst {
                public Event.instant_rate_change (double rate_multiplier, Gst.SegmentFlags new_flags);
                [CCode (has_construct_function = false)]
                [Version (since = "1.18")]
-               public Event.instant_rate_sync_time (double rate, Gst.ClockTime running_time, Gst.ClockTime 
upstream_running_time);
+               public Event.instant_rate_sync_time (double rate_multiplier, Gst.ClockTime running_time, 
Gst.ClockTime upstream_running_time);
                [CCode (has_construct_function = false)]
                public Event.latency (Gst.ClockTime latency);
                [CCode (has_construct_function = false)]
@@ -1411,7 +1411,7 @@ namespace Gst {
                [Version (since = "1.18")]
                public void parse_instant_rate_change (out double rate_multiplier, out Gst.SegmentFlags 
new_flags);
                [Version (since = "1.18")]
-               public void parse_instant_rate_sync_time (double rate, out Gst.ClockTime running_time, out 
Gst.ClockTime upstream_running_time);
+               public void parse_instant_rate_sync_time (out double rate_multiplier, out Gst.ClockTime 
running_time, out Gst.ClockTime upstream_running_time);
                public void parse_latency (out Gst.ClockTime latency);
                [Version (since = "1.6")]
                public void parse_protection (out unowned string system_id, out unowned Gst.Buffer data, out 
unowned string origin);
@@ -2445,6 +2445,8 @@ namespace Gst {
                public bool set_parent_refcount (int refcount);
                public void set_valist (string fieldname, va_list varargs);
                public void set_value (string fieldname, GLib.Value value);
+               [Version (since = "1.18")]
+               public static bool take (ref Gst.Structure? oldstr_ptr, owned Gst.Structure? newstr);
                public void take_value (string fieldname, owned GLib.Value value);
                public string to_string ();
                [CCode (has_construct_function = false)]