hg: jdk9/client/jdk: 8164032: JViewport backing store image is not scaled on HiDPI display

[alexandr.scherbatiy at oracle.com]

Changeset: c86186dc24c8
Author:    alexsch
Date:      2016-11-03 18:43 +0300
URL:       http://hg.openjdk.java.net/jdk9/client/jdk/rev/c86186dc24c8

8164032: JViewport backing store image is not scaled on HiDPI display
Reviewed-by: serb

! src/java.desktop/share/classes/javax/swing/JViewport.java
+ test/javax/swing/JViewport/8164032/JViewPortBackingStoreImageTest.java