Oilpan: move Node traversal objects to the heap.

Source/core/dom/NodeFilterCondition.h

Index: Source/core/dom/NodeFilterCondition.h
diff --git a/Source/core/dom/NodeFilterCondition.h b/Source/core/dom/NodeFilterCondition.h
index e6dbc923bf2af929c7cd7f8487cfd2896d2ddae0..d1248f3b5e14ca353e1abfea2352e16988d0041d 100644
--- a/Source/core/dom/NodeFilterCondition.h
+++ b/Source/core/dom/NodeFilterCondition.h
@@ -25,6 +25,7 @@
 #ifndef NodeFilterCondition_h
 #define NodeFilterCondition_h
 
+#include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
@@ -32,10 +33,12 @@ namespace WebCore {
 class ExceptionState;
 class Node;
 
-class NodeFilterCondition : public RefCounted<NodeFilterCondition> {
+class NodeFilterCondition : public RefCountedWillBeGarbageCollectedFinalized<NodeFilterCondition> {
 public:
     virtual ~NodeFilterCondition() { }
     virtual short acceptNode(Node*, ExceptionState&) const = 0;
+
+    virtual void trace(Visitor*) { }
 };
 
 } // namespace WebCore