test/javax/swing/JComboBox/8033069/bug8033069ScrollBar.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.

@@ -21,11 +21,13 @@
  * questions.
  */
 
 import java.awt.AWTException;
 
-/* @test
+/*
+ * @test
+ * @key headful
  * @bug 8033069
  * @summary Checks that JComboBox popup does not close when mouse wheel is
  *          rotated over combo box and over its popup. The case where
  *          popup has scroll bar.
  * @library ../../regtesthelpers