hg: jdk9/client/jdk: 8160448: Make GTK3 menus appearence similar to native.

[semyon.sadetsky at oracle.com]

Changeset: 900dde7b4a68
Author:    ssadetsky
Date:      2016-07-29 11:19 +0300
URL:       http://hg.openjdk.java.net/jdk9/client/jdk/rev/900dde7b4a68

8160448: Make GTK3 menus appearence similar to native.
Reviewed-by: alexsch

! src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKGraphicsUtils.java
! src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKIconFactory.java
! src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKPainter.java