[oilpan] The Node hierarchy should have correct accept method chains

Source/core/html/HTMLAnchorElement.h

Index: Source/core/html/HTMLAnchorElement.h
diff --git a/Source/core/html/HTMLAnchorElement.h b/Source/core/html/HTMLAnchorElement.h
index 60e49b5056dc4e50c091660489812693dc018573..7f5434d5e17bbc2942a3a5a06c5dd9439408804b 100644
--- a/Source/core/html/HTMLAnchorElement.h
+++ b/Source/core/html/HTMLAnchorElement.h
@@ -102,13 +102,13 @@ public:
     LinkHash visitedLinkHash() const;
     void invalidateCachedVisitedLinkHash() { m_cachedVisitedLinkHash = 0; }
 
-    virtual void acceptHeapVisitor(Visitor* visitor) const { HTMLElement::acceptHeapVisitor(visitor); }
-
 protected:
     HTMLAnchorElement(const QualifiedName&, Handle<Document>);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     virtual bool supportsFocus() const;
     virtual bool isMouseFocusable() const;