[gnome-shell/wip/carlosg/clutter-seat: 198/198] magnifier: Adapt to idle monitors API change

[Carlos Garnacho <carlosg src gnome org>]

commit d76ee4806e019cefc588fe4c790fc280d2b9f692
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Oct 9 17:05:29 2019 +0200

    magnifier: Adapt to idle monitors API change
    
    It takes Clutter input devices now, not device IDs.

 js/ui/magnifier.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/js/ui/magnifier.js b/js/ui/magnifier.js
index 0ec30ee00e..7ed55e8a0f 100644
--- a/js/ui/magnifier.js
+++ b/js/ui/magnifier.js
@@ -744,7 +744,8 @@ var ZoomRegion = class ZoomRegion {
         this._xCaret = 0;
         this._yCaret = 0;
 
-        this._pointerIdleMonitor = Meta.IdleMonitor.get_for_device(Meta.VIRTUAL_CORE_POINTER_ID);
+        let seat = Clutter.get_default_backend().get_default_seat();
+        this._pointerIdleMonitor = Meta.IdleMonitor.get_for_device(seat.get_pointer());
         this._scrollContentsTimerId = 0;
     }