hg: openjfx/2.2/graphics/rt: RT-21828 Canvas Screen Lock

[hang.vo at oracle.com]

Changeset: b27852b420e2
Author:    "Joseph Andresen<joseph.andresen at oracle.com>"
Date:      2012-07-02 06:08 -0700
URL:       http://hg.openjdk.java.net/openjfx/2.2/graphics/rt/rev/b27852b420e2

RT-21828 Canvas Screen Lock

! javafx-ui-common/src/javafx/scene/canvas/Canvas.java
! javafx-ui-common/src/javafx/scene/canvas/GraphicsContext.java