1 files changed, 3 insertions, 2 deletions
diff --git a/Source/WebKit2/UIProcess/DrawingAreaProxy.h b/Source/WebKit2/UIProcess/DrawingAreaProxy.h
index c72cf03..5ccb2fb 100644
--- a/Source/WebKit2/UIProcess/DrawingAreaProxy.h
+++ b/Source/WebKit2/UIProcess/DrawingAreaProxy.h
@@ -83,9 +83,10 @@ public:
 
     virtual void sizeDidChange() = 0;
 
-    // FIXME: visibilityDidChange() should be pure virtual.
+    // FIXME: These should be pure virtual.
     virtual void visibilityDidChange() { }
-
+    virtual void setBackingStoreIsDiscardable(bool) { }
+    
     virtual void setPageIsVisible(bool isVisible) = 0;
 
     const WebCore::IntSize& size() const { return m_size; }