Move 'designMode' attribute from HTMLDocument to Document

Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 803 matching lines @@
     bool queryCommandSupported(const String& command);
     String queryCommandValue(const String& command);
 
     KURL openSearchDescriptionURL();
 
     // designMode support
     enum InheritedBool { off = false, on = true, inherit };
     void setDesignMode(InheritedBool value);
     InheritedBool getDesignMode() const;
     bool inDesignMode() const;
+    String designMode() const;
+    void setDesignMode(const String&);
 
     Document* parentDocument() const;
     Document& topDocument() const;
     WeakPtr<Document> contextDocument();
 
     ScriptRunner* scriptRunner() { return m_scriptRunner.get(); }
 
     HTMLScriptElement* currentScript() const { return !m_currentScriptStack.isEmpty() ? m_currentScriptStack.last().get() : 0; }
     void pushCurrentScript(PassRefPtr<HTMLScriptElement>);
     void popCurrentScript();
@@ skipping 594 matching lines @@
 inline bool Node::isDocumentNode() const
 {
     return this == document();
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h