hg: openjfx/8/graphics/rt: RT-30668: fixed and cleaned ClipboardContent API.

[hang.vo at oracle.com]

Changeset: 721b2775dbfc
Author:    Pavel Safrata
Date:      2013-06-06 15:19 +0100
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/721b2775dbfc

RT-30668: fixed and cleaned ClipboardContent API.

! javafx-ui-common/src/javafx/scene/input/ClipboardContent.java
! javafx-ui-common/test/unit/javafx/scene/input/ClipboardContentTest.java