Add support for [PutForwards] IDL extended attribute

Source/core/dom/Document.cpp

 /*
  * 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, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 662 matching lines @@
     if (!m_implementation)
         m_implementation = DOMImplementation::create(this);
     return m_implementation.get();
 }
 
 bool Document::hasManifest() const
 {
     return documentElement() && isHTMLHtmlElement(documentElement()) && documentElement()->hasAttribute(manifestAttr);
 }
 
+Location* Document::location() const
+{
+    if (!frame())
+        return 0;
+
+    return domWindow()->location();
+}
+
 void Document::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
 {
     ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
 
     Element* newDocumentElement = ElementTraversal::firstWithin(this);
     if (newDocumentElement == m_documentElement)
         return;
     m_documentElement = newDocumentElement;
     // The root style used for media query matching depends on the document element.
     clearStyleResolver();
@@ skipping 4576 matching lines @@
 {
     return DocumentLifecycleNotifier::create(this);
 }
 
 DocumentLifecycleNotifier* Document::lifecycleNotifier()
 {
     return static_cast<DocumentLifecycleNotifier*>(ExecutionContext::lifecycleNotifier());
 }
 
 } // namespace WebCore