[oilpan] Handlify childrenChanged.

Source/core/dom/ShadowRoot.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 88 matching lines @@
     virtual void reportMemoryUsage(MemoryObjectInfo*) const OVERRIDE;
 
     virtual void visitWith(Visitor*) const;
     virtual void accept(Visitor*) const OVERRIDE;
 
 private:
     ShadowRoot(Handle<Document>, ShadowRootType);
     virtual ~ShadowRoot();
 
     virtual bool childTypeAllowed(NodeType) const OVERRIDE;
-    virtual void childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) OVERRIDE;
+    virtual void childrenChanged(bool changedByParser, const Handle<Node>& beforeChange, const Handle<Node>& afterChange, int childCountDelta) OVERRIDE;
 
     // ShadowRoots should never be cloned.
     virtual PassRefPtr<Node> cloneNode(bool) OVERRIDE { return 0; }
 
     // FIXME: This shouldn't happen. https://bugs.webkit.org/show_bug.cgi?id=88834
     bool isOrphan() const { return !host(); }
 
     // FIXME(oilpan): Change these to Members. We will need to modify DoublyLinkListNode.
     ShadowRoot* m_prev;
     ShadowRoot* m_next;
@@ skipping 19 matching lines @@
 }
 
 inline Result<ShadowRoot> toShadowRoot(Node* node)
 {
     return Handle<ShadowRoot>::constCast(toShadowRoot(static_cast<const Node*>(node)));
 }
 
 } // namespace
 
 #endif