[gtk/wip/chergert/for-4-6: 10/56] macos: do not inherit parents frame clock

[Christian Hergert <chergert src gnome org>]

commit 48b408e2c320a5dd7de578a0a8febdb14cab733e
Author: Christian Hergert <christian hergert me>
Date:   Fri Feb 25 14:02:06 2022 -0800

    macos: do not inherit parents frame clock
    
    Windows can end up on different monitors despite having a parent or
    transient-for ancestor. We want them to be driven by the CVDisplayLink
    for the best-monitor, and so this needs to be unshared.

 gdk/macos/gdkmacossurface.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/gdk/macos/gdkmacossurface.c b/gdk/macos/gdkmacossurface.c
index bdf5335ef5..cf9d7067f8 100644
--- a/gdk/macos/gdkmacossurface.c
+++ b/gdk/macos/gdkmacossurface.c
@@ -553,10 +553,7 @@ _gdk_macos_surface_new (GdkMacosDisplay   *display,
 
   g_return_val_if_fail (GDK_IS_MACOS_DISPLAY (display), NULL);
 
-  if (parent != NULL)
-    frame_clock = g_object_ref (gdk_surface_get_frame_clock (parent));
-  else
-    frame_clock = _gdk_frame_clock_idle_new ();
+  frame_clock = _gdk_frame_clock_idle_new ();
 
   switch (surface_type)
     {