[8u-dev] Backport request: Regression: 7094099: DropDown List of JComboBox detached

[anton nashatyrev]

Hello,

     please approve the fix backport from jdk9 to jdk8u-dev. The patch 
was applied without modifications (except the copyright year).

Bug: https://bugs.openjdk.java.net/browse/JDK-7094099
Webrev: http://cr.openjdk.java.net/~anashaty/7094099/8/webrev.00/ 
<http://cr.openjdk.java.net/%7Eanashaty/7094099/8/webrev.00/>
Jdk9 Changeset: http://hg.openjdk.java.net/jdk9/client/jdk/rev/f8c51d72400f

Thanks!
Anton.