diff -r 15bf7259bb7c -r d8a3531bc6b8 uiacceltk/hitchcock/AlfRenderStage/inc/alfrenderstage.h
--- a/uiacceltk/hitchcock/AlfRenderStage/inc/alfrenderstage.h	Tue Feb 02 07:56:43 2010 +0200
+++ b/uiacceltk/hitchcock/AlfRenderStage/inc/alfrenderstage.h	Mon Feb 22 17:57:49 2010 +0200
@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 
+* Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). 
 * All rights reserved.
 * This component and the accompanying materials are made available
 * under the terms of "Eclipse Public License v1.0"
@@ -55,7 +55,8 @@
     public MWsTextCursor,
     public MAlfCompositionAgnosticWindowTreeObserver,
     public MAlfHintObserver,
-    public MWsDrawAnnotationObserver
+    public MWsDrawAnnotationObserver,
+    public MAlfSynchronizationInterface
         {
 public:
 
@@ -146,6 +147,10 @@
 	void WindowGroupChainBrokenAfter(const MWsWindowTreeNode& aWindowGroupNode);
 	void FadeAllChildren(const MWsWindowTreeNode& aWindowTreeNode, TBool aFaded);
 	
+public: // from MAlfSynchronizationInterface
+    	
+	TInt Synchronize(TInt& aId);
+	
 public: // from MWsDrawAnnotationObserver
 	void WindowRedrawStart(const MWsWindowTreeNode& aWindowTreeNode, const TRegion& aRegion);
 	void WindowRedrawEnd(const MWsWindowTreeNode& aWindowTreeNode);
@@ -295,7 +300,9 @@
         };
     // Sprite flash setting for iSpriteRedraw
     TSpriteFlash iSpriteRedrawFlash;
-    
+
+    // Synchronization identifier.
+    TInt iSyncId;
 	};
 
 #endif //__ALFRENDERSTAGE_H__