[gnome-shell] Do not display windows with skip-taskbar hint in overview.

[Steve Frécinaux <sfre src gnome org>]

commit 0245a0cd0e0ea155cf678326e76b93c0137ce39f
Author: Steve Frécinaux <code istique net>
Date:   Fri Aug 28 18:38:48 2009 +0200

    Do not display windows with skip-taskbar hint in overview.
    
    This fixes the bug where the empathy buddy list is always visible on the
    last workspace it was shown on, even if it was closed.

 src/shell-app-monitor.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/shell-app-monitor.c b/src/shell-app-monitor.c
index 8548d37..fc063ce 100644
--- a/src/shell-app-monitor.c
+++ b/src/shell-app-monitor.c
@@ -364,6 +364,9 @@ shell_app_monitor_is_window_usage_tracked (MetaWindow *window)
   if (!window_is_tracked (window))
     return FALSE;
 
+  if (meta_window_is_skip_taskbar (window))
+    return FALSE;
+
   switch (meta_window_get_window_type (window))
     {
       /* Definitely ignore these. */