test/java/awt/Frame/DecoratedExceptions/DecoratedExceptions.java

rev 14031 : 8160974: [TESTBUG] Mark more headful tests with @key headful.

This is a backport of fe58d505fffd from jdk9. 228/596 hunks apply without
modifications. 16 hunks required manual rework. The remainder were for files
not present in jdk8u.

@@ -27,10 +27,11 @@
 
 import java.awt.*;
 
 /*
  * @test
+ * @key headful
  * @summary An attempt to set non-trivial background, shape, or translucency
  *          to a decorated toplevel should end with an exception.
  * @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)
  * @library ../../../../lib/testlibrary
  * @build ExtendedRobot