hg: openjfx/8u-dev/rt: Follow fix for RT-28164: [findbugs] NGNode.highestPixelScale is not final (fix test failures)

[james.graham at oracle.com]

Changeset: e98ac9b77309
Author:    flar <James.Graham at oracle.com>
Date:      2015-01-28 11:34 -0800
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/e98ac9b77309

Follow fix for RT-28164: [findbugs] NGNode.highestPixelScale is not final (fix test failures)
Reviewed by: kcr

! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGCanvas.java
! modules/graphics/src/main/java/com/sun/javafx/tk/DummyToolkit.java
! modules/graphics/src/main/java/com/sun/javafx/tk/Toolkit.java
! modules/graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java
! modules/graphics/src/test/java/com/sun/javafx/pgstub/StubToolkit.java