First of a few changes to allow frames to have multiple child lists.

FirstChild() now takes an additional argument which is the name of the
child list.

layout/tables/nsTableRowFrame.cpp

@@ -1393,7 +1393,7 @@ PRBool nsTableRowFrame::Contains(nsPoint& aPoint)
   // if that fails, check the cells, they might span outside the row rect
   else {
     nsIFrame* kid;
-    FirstChild(kid);
+    FirstChild(nsnull, kid);
     while (nsnull != kid) {
       nsRect kidRect;
       kid->GetRect(kidRect);