Move 'designMode' attribute from HTMLDocument to Document

Source/core/html/HTMLDocument.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 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 61 matching lines @@
     : Document(initializer, HTMLDocumentClass | extendedDocumentClasses)
 {
     ScriptWrappable::init(this);
     clearXMLVersion();
 }
 
 HTMLDocument::~HTMLDocument()
 {
 }
 
-String HTMLDocument::designMode() const
-{
-    return inDesignMode() ? "on" : "off";
-}
-
-void HTMLDocument::setDesignMode(const String& value)
-{
-    InheritedBool mode;
-    if (equalIgnoringCase(value, "on"))
-        mode = on;
-    else if (equalIgnoringCase(value, "off"))
-        mode = off;
-    else
-        mode = inherit;
-    Document::setDesignMode(mode);
-}
-
 HTMLBodyElement* HTMLDocument::htmlBodyElement() const
 {
     HTMLElement* body = this->body();
     return isHTMLBodyElement(body) ? toHTMLBodyElement(body) : 0;
 }
 
 const AtomicString& HTMLDocument::bodyAttributeValue(const QualifiedName& name) const
 {
     if (HTMLBodyElement* body = htmlBodyElement())
         return body->fastGetAttribute(name);
@@ skipping 188 matching lines @@
 void HTMLDocument::writeln(DOMWindow* callingWindow, const Vector<String>& text)
 {
     ASSERT(callingWindow);
     StringBuilder builder;
     for (size_t i = 0; i < text.size(); ++i)
         builder.append(text[i]);
     writeln(builder.toString(), callingWindow->document());
 }
 
 }