hg: openjfx/jfx-dev/rt: 8193426: [TEST BUG] Exceptions, warnings when running TabPaneDragPolicyTest

[ambarish.rapte at oracle.com]

Changeset: 570f0433e960
Author:    arapte
Date:      2017-12-14 11:34 +0530
URL:       http://hg.openjdk.java.net/openjfx/jfx-dev/rt/rev/570f0433e960

8193426: [TEST BUG] Exceptions, warnings when running TabPaneDragPolicyTest
Reviewed-by: kcr, aghaisas

! tests/system/src/test/java/test/robot/javafx/scene/TabPaneDragPolicyTest.java