Rename LockBackForwardList to ReplaceCurrentItem.

Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 215 matching lines @@
 DOMWindow* LocalFrame::domWindow() const
 {
     return m_domWindow.get();
 }
 
 WindowProxy* LocalFrame::windowProxy(DOMWrapperWorld& world)
 {
     return m_script->windowProxy(world);
 }
 
-void LocalFrame::navigate(Document& originDocument, const KURL& url, bool lockBackForwardList, UserGestureStatus userGestureStatus)
+void LocalFrame::navigate(Document& originDocument, const KURL& url, bool replaceCurrentItem, UserGestureStatus userGestureStatus)
 {
     // TODO(dcheng): Special case for window.open("about:blank") to ensure it loads synchronously into
     // a new window. This is our historical behavior, and it's consistent with the creation of
     // a new iframe with src="about:blank". Perhaps we could get rid of this if we started reporting
     // the initial empty document's url as about:blank? See crbug.com/471239.
     // TODO(japhet): This special case is also necessary for behavior asserted by some extensions tests.
     // Using NavigationScheduler::scheduleNavigationChange causes the navigation to be flagged as a
     // client redirect, which is observable via the webNavigation extension api.
     if (isMainFrame() && !m_loader.stateMachine()->committedFirstRealDocumentLoad()) {
         FrameLoadRequest request(&originDocument, url);
         request.resourceRequest().setHasUserGesture(userGestureStatus == UserGestureStatus::Active);
         m_loader.load(request);
     } else {
-        m_navigationScheduler.scheduleLocationChange(&originDocument, url.string(), lockBackForwardList);
+        m_navigationScheduler.scheduleLocationChange(&originDocument, url.string(), replaceCurrentItem);
     }
 }
 
 void LocalFrame::navigate(const FrameLoadRequest& request)
 {
     m_loader.load(request);
 }
 
 void LocalFrame::reload(FrameLoadType loadType, ClientRedirectPolicy clientRedirectPolicy)
 {
@@ skipping 583 matching lines @@
 {
     if (isLocalRoot())
         m_instrumentingAgents = InstrumentingAgents::create();
     else
         m_instrumentingAgents = localFrameRoot()->m_instrumentingAgents;
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(LocalFrame);
 
 } // namespace blink