hg: openjfx/8u-dev/rt: Fix RT-28164: [findbugs] NGNode.highestPixelScale is not final

[james.graham at oracle.com]

Changeset: a3214feb1522
Author:    flar <James.Graham at oracle.com>
Date:      2015-01-27 12:39 -0800
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/a3214feb1522

Fix RT-28164: [findbugs] NGNode.highestPixelScale is not final
Reviewed by: kcr

! modules/graphics/src/main/java/com/sun/javafx/sg/prism/CacheFilter.java
! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGCanvas.java
! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGNode.java