test/javax/swing/JButton/JButtonPaintNPE/JButtonPaintNPE.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.

*** 33,42 ****
--- 33,43 ----
  
  import sun.awt.SunToolkit;
  
  /**
   * @test
+  * @key headful
   * @bug 8009919
   * @author Sergey Bylokhov
   */
  public final class JButtonPaintNPE {