[mutter] backend/x11/nested: Always claim the lid is open

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c8db8bbe22b807634da520ac02c96a3d2eeac088
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Nov 29 11:37:45 2018 +0100

    backend/x11/nested: Always claim the lid is open
    
    The nested backend used the value from udev, meaning that one couldn't
    configure the fake monitor if the laptop panel of the host was closed.
    Avoid this annoyance by always having the nested backend claiming the
    lid is open.

 src/backends/x11/nested/meta-backend-x11-nested.c | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/src/backends/x11/nested/meta-backend-x11-nested.c 
b/src/backends/x11/nested/meta-backend-x11-nested.c
index 923ae7c6e..81a95bae8 100644
--- a/src/backends/x11/nested/meta-backend-x11-nested.c
+++ b/src/backends/x11/nested/meta-backend-x11-nested.c
@@ -131,6 +131,12 @@ meta_backend_x11_nested_set_keymap (MetaBackend *backend,
 {
 }
 
+static gboolean
+meta_backend_x11_nested_is_lid_closed (MetaBackend *backend)
+{
+  return FALSE;
+}
+
 static gboolean
 meta_backend_x11_nested_handle_host_xevent (MetaBackendX11 *x11,
                                             XEvent         *event)
@@ -192,6 +198,7 @@ meta_backend_x11_nested_class_init (MetaBackendX11NestedClass *klass)
   backend_class->select_stage_events = meta_backend_x11_nested_select_stage_events;
   backend_class->lock_layout_group = meta_backend_x11_nested_lock_layout_group;
   backend_class->set_keymap = meta_backend_x11_nested_set_keymap;
+  backend_class->is_lid_closed = meta_backend_x11_nested_is_lid_closed;
 
   backend_x11_class->handle_host_xevent = meta_backend_x11_nested_handle_host_xevent;
   backend_x11_class->translate_device_event = meta_backend_x11_nested_translate_device_event;