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

Source/core/dom/ChildNodeList.cpp

Index: Source/core/dom/ChildNodeList.cpp
diff --git a/Source/core/dom/ChildNodeList.cpp b/Source/core/dom/ChildNodeList.cpp
index 9576cc57f236b8409860d9274013bafc264c5d54..ee585c430ce3934994fbf70a4f8b79c545150eca 100644
--- a/Source/core/dom/ChildNodeList.cpp
+++ b/Source/core/dom/ChildNodeList.cpp
@@ -35,6 +35,11 @@ ChildNodeList::ChildNodeList(PassRefPtr<ContainerNode> parent)
     ASSERT(m_parent);
 }
 
+Node* ChildNodeList::virtualOwnerNode() const
+{
+    return ownerNode();
+}
+
 ChildNodeList::~ChildNodeList()
 {
     m_parent->nodeLists()->removeChildNodeList(this);