Make NodeList::ownerNode() virtual and rename to virtualOwnerNode()

Source/core/dom/LiveNodeList.cpp

Index: Source/core/dom/LiveNodeList.cpp
diff --git a/Source/core/dom/LiveNodeList.cpp b/Source/core/dom/LiveNodeList.cpp
index 08d9d86b82f384a48cdadda44e60c1f85896c474..21d078323f9031a1ea2f5d746d4381750948d0b3 100644
--- a/Source/core/dom/LiveNodeList.cpp
+++ b/Source/core/dom/LiveNodeList.cpp
@@ -41,6 +41,11 @@ void LiveNodeListBase::invalidateIdNameCacheMaps() const
     static_cast<const HTMLCollection*>(this)->invalidateIdNameCacheMaps();
 }
 
+Node* LiveNodeList::virtualOwnerNode() const
+{
+    return ownerNode();
+}
+
 void LiveNodeList::invalidateCache() const
 {
     m_collectionIndexCache.invalidate();