Remove iframe@seamless

Source/core/html/HTMLIFrameElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2004, 2006, 2008, 2009 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 14 matching lines @@
 #define HTMLIFrameElement_h
 
 #include "core/html/HTMLFrameElementBase.h"
 
 namespace WebCore {
 
 class HTMLIFrameElement FINAL : public HTMLFrameElementBase {
 public:
     static PassRefPtr<HTMLIFrameElement> create(Document&);
 
-    bool shouldDisplaySeamlessly() const;
-
 private:
     explicit HTMLIFrameElement(Document&);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
 
     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
     virtual void didRecalcStyle(StyleRecalcChange) OVERRIDE;
 
     virtual bool loadedNonEmptyDocument() const OVERRIDE { return m_didLoadNonEmptyDocument; }
     virtual void didLoadNonEmptyDocument() OVERRIDE { m_didLoadNonEmptyDocument = true; }
     virtual bool isInteractiveContent() const OVERRIDE;
 
     AtomicString m_name;
     bool m_didLoadNonEmptyDocument;
 };
 
 DEFINE_NODE_TYPE_CASTS(HTMLIFrameElement, hasTagName(HTMLNames::iframeTag));
 
 } // namespace WebCore
 
 #endif // HTMLIFrameElement_h