1 files changed, 4 insertions, 0 deletions
diff --git a/Source/WebKit/blackberry/WebKitSupport/InRegionScrollableArea.h b/Source/WebKit/blackberry/WebKitSupport/InRegionScrollableArea.h
index 679e490b5..443b94f5a 100644
--- a/Source/WebKit/blackberry/WebKitSupport/InRegionScrollableArea.h
+++ b/Source/WebKit/blackberry/WebKitSupport/InRegionScrollableArea.h
@@ -25,6 +25,7 @@
 
 namespace WebCore {
 class LayerWebKitThread;
+class Node;
 class RenderLayer;
 }
 
@@ -49,7 +50,10 @@ private:
     WebPagePrivate* m_webPage;
     WebCore::RenderLayer* m_layer;
 
+    // We either cache one here: in case of a composited scrollable layer
+    // cache the LayerWebKitThread. Otherwise, the Node.
     RefPtr<WebCore::LayerWebKitThread> m_cachedCompositedScrollableLayer;
+    RefPtr<WebCore::Node> m_cachedNonCompositedScrollableNode;
 
     bool m_hasWindowVisibleRectCalculated;
 };