Remove iframe@seamless

Source/core/dom/DocumentInit.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, 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) 2013 Google Inc. All rights reserved.
  *
@@ skipping 79 matching lines @@
 {
     Frame* frame = frameForSecurityContext();
     return (frame && frame->ownerElement()) || !m_url.isEmpty();
 }
 
 bool DocumentInit::shouldTreatURLAsSrcdocDocument() const
 {
     return m_parent && m_frame->loader().shouldTreatURLAsSrcdocDocument(m_url);
 }
 
-bool DocumentInit::isSeamlessAllowedFor(Document* child) const
-{
-    if (!m_parent)
-        return false;
-    if (m_parent->isSandboxed(SandboxSeamlessIframes))
-        return false;
-    if (child->isSrcdocDocument())
-        return true;
-    if (m_parent->securityOrigin()->canAccess(child->securityOrigin()))
-        return true;
-    return m_parent->securityOrigin()->canRequest(child->url());
-}
-
 Frame* DocumentInit::frameForSecurityContext() const
 {
     if (m_frame)
         return m_frame;
     if (m_import)
         return m_import->frame();
     return 0;
 }
 
 SandboxFlags DocumentInit::sandboxFlags() const
@@ skipping 39 matching lines @@
     return m_contextDocument;
 }
 
 DocumentInit DocumentInit::fromContext(WeakPtr<Document> contextDocument, const KURL& url)
 {
     return DocumentInit(url, 0, contextDocument, 0);
 }
 
 } // namespace WebCore