The web unit tests now run in headless mode to support running them on our headless test machines -- see RT-40716. This results in the following exception in DOMTest.testDOMWindowAndStyleAccess, although the test still passes:

javafx.scene.web.DOMTest > testDOMWindowAndStyleAccess STANDARD_ERROR
    java.lang.NullPointerException
     at com.sun.javafx.util.Utils.getScreen(Utils.java:687)
     at com.sun.javafx.webkit.WebPageClientImpl.getScreenBounds(WebPageClientImpl.java:110)
     at com.sun.webkit.WCWidget.fwkGetScreenRect(WCWidget.java:118)
     at com.sun.webkit.dom.DOMWindowImpl.resizeByImpl(Native Method)
     at com.sun.webkit.dom.DOMWindowImpl.resizeBy(DOMWindowImpl.java:1151)
     at javafx.scene.web.DOMTest.lambda$testDOMWindowAndStyleAccess$49(DOMTest.java:344)
     at javafx.scene.web.DOMTest$$Lambda$246/30864552.run(Unknown Source)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
     at com.sun.javafx.application.PlatformImpl.lambda$null$171(PlatformImpl.java:295)
     at com.sun.javafx.application.PlatformImpl$$Lambda$52/19305760.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sun.javafx.application.PlatformImpl.lambda$runLater$172(PlatformImpl.java:294)
     at com.sun.javafx.application.PlatformImpl$$Lambda$51/9075867.run(Unknown Source)
     at com.sun.glass.ui.monocle.RunnableProcessor.runLoop(RunnableProcessor.java:92)
     at com.sun.glass.ui.monocle.RunnableProcessor.run(RunnableProcessor.java:51)
     at java.lang.Thread.run(Thread.java:744)