Remove some unused functions in core

Source/core/dom/DOMImplementation.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 310 matching lines @@
         ASSERT(headElement);
         RefPtrWillBeRawPtr<HTMLTitleElement> titleElement = HTMLTitleElement::create(*d);
         headElement->appendChild(titleElement);
         titleElement->appendChild(d->createTextNode(title), ASSERT_NO_EXCEPTION);
     }
     d->setSecurityOrigin(document().securityOrigin()->isolatedCopy());
     d->setContextFeatures(document().contextFeatures());
     return d.release();
 }
 
-PassRefPtrWillBeRawPtr<Document> DOMImplementation::createDocument(const String& type, LocalFrame* frame, const KURL& url, bool inViewSourceMode)
-{
-    return createDocument(type, DocumentInit(url, frame), inViewSourceMode);
-}
-
 PassRefPtrWillBeRawPtr<Document> DOMImplementation::createDocument(const String& type, const DocumentInit& init, bool inViewSourceMode)
 {
     if (inViewSourceMode)
         return HTMLViewSourceDocument::create(init, type);
 
     // Plugins cannot take HTML and XHTML from us, and we don't even need to initialize the plugin database for those.
     if (type == "text/html")
         return HTMLDocument::create(init);
     if (type == "application/xhtml+xml")
         return XMLDocument::createXHTML(init);
@@ skipping 27 matching lines @@
 
     return HTMLDocument::create(init);
 }
 
 void DOMImplementation::trace(Visitor* visitor)
 {
     visitor->trace(m_document);
 }
 
 }