hg: jdk/client: 8197549: Implement a new method similar to waitState() on Operator which run the check on event queue

[jayathirth.d.v at oracle.com]

Changeset: 149647adb633
Author:    akolarkunnu
Date:      2018-02-16 18:27 +0530
URL:       http://hg.openjdk.java.net/jdk/client/rev/149647adb633

8197549: Implement a new method similar to waitState() on Operator which run the check on event queue
Reviewed-by: serb

! test/jdk/sanity/client/lib/jemmy/src/org/netbeans/jemmy/operators/Operator.java