GtkRoot: Drop overlap with GtkNative

Drop the parts from the GtkRoot interface
that have been taken over by GtkNative.

gtk/gtkroot.c

@@ -50,27 +50,10 @@ gtk_root_default_get_display (GtkRoot *self)
   return gdk_display_get_default ();
 }
 
-static GskRenderer *
-gtk_root_default_get_renderer (GtkRoot *self)
-{
-  return NULL;
-}
-
-static void
-gtk_root_default_get_surface_transform (GtkRoot *self,
-                                        int     *x,
-                                        int     *y)
-{
-  *x = 0;
-  *y = 0;
-}
-
 static void
 gtk_root_default_init (GtkRootInterface *iface)
 {
   iface->get_display = gtk_root_default_get_display;
-  iface->get_renderer = gtk_root_default_get_renderer;
-  iface->get_surface_transform = gtk_root_default_get_surface_transform;
 
   g_object_interface_install_property (iface,
       g_param_spec_object ("focus-widget",
@@ -91,53 +74,6 @@ gtk_root_get_display (GtkRoot *self)
   return iface->get_display (self);
 }
 
-GskRenderer *
-gtk_root_get_renderer (GtkRoot *self)
-{
-  GtkRootInterface *iface;
-
-  g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
-
-  iface = GTK_ROOT_GET_IFACE (self);
-  return iface->get_renderer (self);
-}
-
-void
-gtk_root_get_surface_transform (GtkRoot *self,
-                                int     *x,
-                                int     *y)
-{
-  GtkRootInterface *iface;
-
-  g_return_if_fail (GTK_IS_ROOT (self));
-  g_return_if_fail (x != 0);
-  g_return_if_fail (y != 0);
-
-  iface = GTK_ROOT_GET_IFACE (self);
-  return iface->get_surface_transform (self, x, y);
-}
-
-/**
- * gtk_root_get_for_surface:
- * @surface: a #GdkSurface
- *
- * Finds the GtkRoot associated with the surface.
- * 
- * Returns: (transfer none): the #GtkRoot that is associated with @surface
- */
-GtkWidget *
-gtk_root_get_for_surface (GdkSurface *surface)
-{
-  GtkWidget *widget;
-
-  widget = (GtkWidget *)gdk_surface_get_widget (surface);
-
-  if (widget && GTK_IS_ROOT (widget))
-    return widget;
-
-  return NULL;
-}
-
 /**
  * gtk_root_set_focus:
  * @self: a #GtkRoot

gtk/gtkroot.h

@@ -45,17 +45,9 @@ struct _GtkRootInterface
   GTypeInterface g_iface;
 
   /*< public >*/
-  GdkDisplay *          (* get_display)                 (GtkRoot                *self);
+  GdkDisplay * (* get_display)  (GtkRoot *self);
-  GskRenderer *         (* get_renderer)                (GtkRoot                *self);
-
-  void                  (* get_surface_transform)       (GtkRoot                *root,
-                                                         int                    *x,
-                                                         int                    *y);
 };
 
-GDK_AVAILABLE_IN_ALL
-GtkWidget * gtk_root_get_for_surface (GdkSurface *surface);
-
 GDK_AVAILABLE_IN_ALL
 void        gtk_root_set_focus (GtkRoot   *self,
                                 GtkWidget *focus);

gtk/gtkrootprivate.h

@@ -5,12 +5,8 @@
 
 G_BEGIN_DECLS
 
-GdkDisplay *            gtk_root_get_display            (GtkRoot                *root);
+GdkDisplay * gtk_root_get_display (GtkRoot *root);
-GskRenderer *           gtk_root_get_renderer           (GtkRoot                *self);
 
-void                    gtk_root_get_surface_transform  (GtkRoot                *self,
-                                                         int                    *x,
-                                                         int                    *y);
 enum {
   GTK_ROOT_PROP_FOCUS_WIDGET,
   GTK_ROOT_NUM_PROPERTIES