1 files changed, 3 insertions, 1 deletions
diff --git a/layout/xul/nsStackFrame.cpp b/layout/xul/nsStackFrame.cpp
index a2ec57adc..437d558f9 100644
--- a/layout/xul/nsStackFrame.cpp
+++ b/layout/xul/nsStackFrame.cpp
@@ -45,6 +45,7 @@ nsStackFrame::nsStackFrame(nsStyleContext* aContext):
 // a bit more.
 void
 nsStackFrame::BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
+                                          const nsRect&           aDirtyRect,
                                           const nsDisplayListSet& aLists)
 {
   // BuildDisplayListForChild puts stacking contexts into the PositionedDescendants
@@ -55,7 +56,8 @@ nsStackFrame::BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
   nsIFrame* kid = mFrames.FirstChild();
   while (kid) {
     // Force each child into its own true stacking context.
-    BuildDisplayListForChild(aBuilder, kid, kidLists, DISPLAY_CHILD_FORCE_STACKING_CONTEXT);
+    BuildDisplayListForChild(aBuilder, kid, aDirtyRect, kidLists,
+                             DISPLAY_CHILD_FORCE_STACKING_CONTEXT);
     kid = kid->GetNextSibling();
   }
 }