src/macosx/classes/sun/lwawt/LWToolkit.java

*** 383,392 ****
--- 383,394 ----
  
      protected final MouseInfoPeer createMouseInfoPeerImpl() {
          return new LWMouseInfoPeer();
      }
  
+     protected abstract PlatformWindow getPlatformWindowUnderMouse();
+ 
      @Override
      public final PrintJob getPrintJob(Frame frame, String doctitle,
                                        Properties props) {
          return getPrintJob(frame, doctitle, null, null);
      }