hg: openjfx/8/graphics/rt: Fix RT-32242: Canvas should clear buffer on certain clearRect, fillRect calls

[hang.vo at oracle.com]

Changeset: b7d847549c94
Author:    flar <James.Graham at oracle.com>
Date:      2013-10-25 15:24 -0700
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/b7d847549c94

Fix RT-32242: Canvas should clear buffer on certain clearRect, fillRect calls
Reviewed by: kcr

! modules/graphics/src/main/java/com/sun/javafx/sg/prism/GrowableDataBuffer.java
! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGCanvas.java
! modules/graphics/src/main/java/javafx/scene/canvas/Canvas.java
! modules/graphics/src/main/java/javafx/scene/canvas/GraphicsContext.java
+ modules/graphics/src/test/java/com/sun/javafx/sg/prism/GrowableDataBufferTest.java