[gtk/wip/chergert/quartz4u] macos: give access to helper API

[Christian Hergert <chergert src gnome org>]

commit 5653f699ff88260b8282f54b916fb213b5880b57
Author: Christian Hergert <chergert redhat com>
Date:   Mon May 4 20:29:49 2020 -0700

    macos: give access to helper API

 gdk/macos/GdkMacosBaseView.h | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gdk/macos/GdkMacosBaseView.h b/gdk/macos/GdkMacosBaseView.h
index a3c6c05e40..f6dc125ac2 100644
--- a/gdk/macos/GdkMacosBaseView.h
+++ b/gdk/macos/GdkMacosBaseView.h
@@ -35,6 +35,7 @@
 }
 
 -(void)setNeedsInvalidateShadow: (BOOL)invalidate;
+-(void)updateTrackingRect;
 -(NSTrackingRectTag)trackingRect;
 
 @end