hg: openjfx/9-dev/rt: 8088846: PopupWindow does not disappear when associated Control is not visible.

[chien.yang at oracle.com]

Changeset: a1cfa82b3dfa
Author:    ckyang
Date:      2016-07-11 14:41 -0700
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/a1cfa82b3dfa

8088846: PopupWindow does not disappear when associated Control is not visible.
Reviewed-by: jgiles

! modules/graphics/src/main/java/javafx/stage/PopupWindow.java
! modules/graphics/src/test/java/test/javafx/stage/PopupTest.java