Drop Element::isHTMLFrameElementBase() virtual function

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 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
@@ skipping 440 matching lines @@
     virtual bool isFormControlElement() const { return false; }
     virtual bool isSpinButtonElement() const { return false; }
     virtual bool isTextFormControl() const { return false; }
     virtual bool isOptionalFormControl() const { return false; }
     virtual bool isRequiredFormControl() const { return false; }
     virtual bool isDefaultButtonForForm() const { return false; }
     virtual bool willValidate() const { return false; }
     virtual bool isValidFormControlElement() { return false; }
     virtual bool isInRange() const { return false; }
     virtual bool isOutOfRange() const { return false; }
-    virtual bool isFrameElementBase() const { return false; }
     virtual bool isPasswordGeneratorButtonElement() const { return false; }
     virtual bool isClearButtonElement() const { return false; }
 
     virtual bool canContainRangeEndPoint() const OVERRIDE { return true; }
 
     // Used for disabled form elements; if true, prevents mouse events from being dispatched
     // to event listeners, and prevents DOMActivate events from being sent at all.
     virtual bool isDisabledFormControl() const { return false; }
 
     bool hasPendingResources() const;
@@ skipping 420 matching lines @@
     template <> inline bool isElementOfType<const thisType>(const Element& element) { return element.predicate; } \
     DEFINE_NODE_TYPE_CASTS(thisType, predicate)
 
 #define DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType) \
     template <> inline bool isElementOfType<const thisType>(const Element& element) { return is##thisType(element); } \
     DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(thisType)
 
 } // namespace
 
 #endif