Have CharacterData constructor take a Document reference in argument

Source/core/dom/CharacterData.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 33 matching lines @@
 
     bool containsOnlyWhitespace() const;
 
     StringImpl* dataImpl() { return m_data.impl(); }
 
     // Like appendData, but optimized for the parser (e.g., no mutation events).
     // Returns how much could be added before length limit was met.
     unsigned parserAppendData(const String& string, unsigned offset, unsigned lengthLimit);
 
 protected:
-    CharacterData(TreeScope* treeScope, const String& text, ConstructionType type)
-        : Node(treeScope, type)
+    CharacterData(TreeScope& treeScope, const String& text, ConstructionType type)
+        : Node(&treeScope, type)
         , m_data(!text.isNull() ? text : emptyString())
     {
         ASSERT(type == CreateOther || type == CreateText || type == CreateEditingText);
         ScriptWrappable::init(this);
     }
 
     void setDataWithoutUpdate(const String& data)
     {
         ASSERT(!data.isNull());
         m_data = data;
     }
     void didModifyData(const String& oldValue);
 
     String m_data;
 
 private:
     virtual String nodeValue() const OVERRIDE FINAL;
     virtual void setNodeValue(const String&) OVERRIDE FINAL;
     virtual bool isCharacterDataNode() const OVERRIDE FINAL { return true; }
     virtual int maxCharacterOffset() const OVERRIDE FINAL;
     virtual bool offsetInCharacters() const OVERRIDE FINAL;
     void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, AttachBehavior = AttachLazily);
 };
 
 } // namespace WebCore
 
 #endif // CharacterData_h