--- old/src/share/classes/java/awt/peer/FramePeer.java	2014-02-03 18:16:44.000000000 +0400
+++ new/src/share/classes/java/awt/peer/FramePeer.java	2014-02-03 18:16:43.000000000 +0400
@@ -28,6 +28,7 @@
 import java.awt.*;
 
 import sun.awt.EmbeddedFrame;
+import sun.awt.image.OffScreenImage;
 
 /**
  * The peer interface for {@link Frame}. This adds a couple of frame specific
@@ -131,4 +132,17 @@
      * @param activate activate or deactivate the window
      */
     void emulateActivation(boolean activate);
+    
+    /**
+     * Notifies that the scale factor has changed.
+     * The method is used by the LightweightFrame Mac implementation.
+     */
+    default void notifyScaleFactorChanged() {}
+    
+    /**
+     * Creates a HiDPI back buffer image with a scale factor matching
+     * the scale of the frame (which is an internal value).
+     * The method is currently used by the LightweightFrame Mac implementation.
+     */
+    default OffScreenImage createHiDPIImage(int width, int height) { return null; }
 }