Rename LockBackForwardList to ReplaceCurrentItem.

Source/core/html/HTMLFrameElementBase.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 46 matching lines @@
     void setFocus(bool) final;
 
     bool isURLAttribute(const Attribute&) const final;
     bool hasLegalLinkAttribute(const QualifiedName&) const final;
     bool isHTMLContentAttribute(const Attribute&) const final;
 
     bool areAuthorShadowsAllowed() const final { return false; }
 
     void setLocation(const String&);
     void setNameAndOpenURL();
-    void openURL(bool lockBackForwardList = true);
+    void openURL(bool replaceCurrentItem = true);
 
     AtomicString m_URL;
     AtomicString m_frameName;
 
     ScrollbarMode m_scrolling;
 
     int m_marginWidth;
     int m_marginHeight;
 };
 
 inline bool isHTMLFrameElementBase(const HTMLElement& element)
 {
     return isHTMLFrameElement(element) || isHTMLIFrameElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLFrameElementBase);
 
 } // namespace blink
 
 #endif // HTMLFrameElementBase_h