[vala/staging] gtk+-3.0: Treat Gtk.IconInfo as GLib.Object which it is since 3.8

[Rico Tzschichholz <ricotz src gnome org>]

commit e75900ec549270da4e1ac4440777a0e6a83918a6
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Sep 18 18:40:38 2018 +0200

    gtk+-3.0: Treat Gtk.IconInfo as GLib.Object which it is since 3.8
    
    This change is backwards incompatible!
    
    See https://gitlab.gnome.org/GNOME/vala/issues/663

 vapi/gtk+-3.0.vapi                | 16 +++++-----------
 vapi/metadata/Gtk-3.0-custom.vala |  5 -----
 vapi/metadata/Gtk-3.0.metadata    |  7 ++++---
 3 files changed, 9 insertions(+), 19 deletions(-)
---
diff --git a/vapi/gtk+-3.0.vapi b/vapi/gtk+-3.0.vapi
index 2e0755dab..11acd0041 100644
--- a/vapi/gtk+-3.0.vapi
+++ b/vapi/gtk+-3.0.vapi
@@ -3860,17 +3860,14 @@ namespace Gtk {
                public static unowned Gtk.IconSet lookup_default (string stock_id);
                public void remove_default ();
        }
-       [CCode (cheader_filename = "gtk/gtk.h", copy_function = "gtk_icon_info_copy", free_function = 
"gtk_icon_info_free", type_id = "gtk_icon_info_get_type ()")]
-       [Compact]
-       public class IconInfo {
-               [Version (deprecated = true, deprecated_since = "3.8", since = "2.4")]
-               public Gtk.IconInfo copy ();
+       [CCode (cheader_filename = "gtk/gtk.h", type_id = "gtk_icon_info_get_type ()")]
+       [Version (since = "3.8")]
+       public class IconInfo : GLib.Object {
+               [CCode (has_construct_function = false)]
+               protected IconInfo ();
                [CCode (has_construct_function = false)]
                [Version (since = "2.14")]
                public IconInfo.for_pixbuf (Gtk.IconTheme icon_theme, Gdk.Pixbuf pixbuf);
-               [DestroysInstance]
-               [Version (deprecated = true, deprecated_since = "3.8", since = "2.4")]
-               public void free ();
                [Version (deprecated = true, deprecated_since = "3.14", since = "2.4")]
                public bool get_attach_points ([CCode (array_length_cname = "n_points", array_length_pos = 
1.1)] out Gdk.Point[] points);
                [Version (since = "3.10")]
@@ -3889,17 +3886,14 @@ namespace Gtk {
                public bool is_symbolic ();
                [Version (since = "2.4")]
                public Gdk.Pixbuf load_icon () throws GLib.Error;
-               [Version (since = "3.8")]
                public async Gdk.Pixbuf load_icon_async (GLib.Cancellable? cancellable = null) throws 
GLib.Error;
                [Version (since = "3.10")]
                public Cairo.Surface load_surface (Gdk.Window? for_window) throws GLib.Error;
                [Version (since = "3.0")]
                public Gdk.Pixbuf load_symbolic (Gdk.RGBA fg, Gdk.RGBA? success_color = null, Gdk.RGBA? 
warning_color = null, Gdk.RGBA? error_color = null, out bool was_symbolic = null) throws GLib.Error;
-               [Version (since = "3.8")]
                public async Gdk.Pixbuf load_symbolic_async (Gdk.RGBA fg, Gdk.RGBA? success_color = null, 
Gdk.RGBA? warning_color = null, Gdk.RGBA? error_color = null, GLib.Cancellable? cancellable = null, out bool 
was_symbolic = null) throws GLib.Error;
                [Version (since = "3.0")]
                public Gdk.Pixbuf load_symbolic_for_context (Gtk.StyleContext context, out bool was_symbolic 
= null) throws GLib.Error;
-               [Version (since = "3.8")]
                public async Gdk.Pixbuf load_symbolic_for_context_async (Gtk.StyleContext context, 
GLib.Cancellable? cancellable = null, out bool was_symbolic = null) throws GLib.Error;
                [Version (deprecated = true, deprecated_since = "3.0", since = "3.0")]
                public Gdk.Pixbuf load_symbolic_for_style (Gtk.Style style, Gtk.StateType state, out bool 
was_symbolic = null) throws GLib.Error;
diff --git a/vapi/metadata/Gtk-3.0-custom.vala b/vapi/metadata/Gtk-3.0-custom.vala
index d16624b6a..9e4a9c4ae 100644
--- a/vapi/metadata/Gtk-3.0-custom.vala
+++ b/vapi/metadata/Gtk-3.0-custom.vala
@@ -45,11 +45,6 @@ namespace Gtk {
                public bool load_from_data (string data, ssize_t length = -1) throws GLib.Error;
        }
 
-       [CCode (cheader_filename = "gtk/gtk.h", copy_function = "gtk_icon_info_copy", free_function = 
"gtk_icon_info_free", type_id = "gtk_icon_info_get_type ()")]
-       [Compact]
-       public class IconInfo {
-       }
-
        [CCode (cheader_filename = "gtk/gtk.h", has_copy_function = false, has_destroy_function = false, 
has_type_id = false)]
        public struct RecentData {
        }
diff --git a/vapi/metadata/Gtk-3.0.metadata b/vapi/metadata/Gtk-3.0.metadata
index d06320656..ce154b82b 100644
--- a/vapi/metadata/Gtk-3.0.metadata
+++ b/vapi/metadata/Gtk-3.0.metadata
@@ -459,9 +459,6 @@ EntryBuffer
   .emit_inserted_text.chars type="uint8[]" array_length_idx=2
   .insert_text.chars type="uint8[]" array_length_idx=2
   .set_text.chars type="uint8[]" array_length_idx=1
-IconInfo
-  .copy skip=false
-  .free skip=false destroys_instance
 IconSet
   .get_sizes.sizes type="Gtk.IconSize[]"
   .render_icon*.size type="Gtk.IconSize"
@@ -591,6 +588,10 @@ test_init.argvp unowned
 *.string name="str"
 *.*.string name="str"
 
+// Broken backwards compat
+//////////////////////////
+IconInfo since="3.8"
+
 // Forward upstream
 ///////////////////
 Widget