Removed FrameView's windowToContents and contentsToWindow methods.

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 681 matching lines @@
         return VisiblePosition();
     LayoutObject* renderer = node->renderer();
     if (!renderer)
         return VisiblePosition();
     VisiblePosition visiblePos = VisiblePosition(renderer->positionForPoint(result.localPoint()));
     if (visiblePos.isNull())
         visiblePos = VisiblePosition(firstPositionInOrBeforeNode(node));
     return visiblePos;
 }
 
-Document* LocalFrame::documentAtPoint(const IntPoint& point)
+Document* LocalFrame::documentAtPoint(const IntPoint& pointInRootFrame)
 {
     if (!view())
         return nullptr;
 
-    IntPoint pt = view()->windowToContents(point);
+    IntPoint pt = view()->rootFrameToContents(pointInRootFrame);
     HitTestResult result = HitTestResult(pt);
 
     if (contentRenderer())
         result = eventHandler().hitTestResultAtPoint(pt, HitTestRequest::ReadOnly | HitTestRequest::Active);
     return result.innerNode() ? &result.innerNode()->document() : nullptr;
 }
 
 PassRefPtrWillBeRawPtr<Range> LocalFrame::rangeForPoint(const IntPoint& framePoint)
 {
     VisiblePosition position = visiblePositionForPoint(framePoint);
@@ skipping 106 matching lines @@
     // We detach the FrameView's custom scroll bars as early as
     // possible to prevent m_doc->detach() from messing with the view
     // such that its scroll bars won't be torn down.
     //
     // FIXME: We should revisit this.
     if (m_view)
         m_view->prepareForDetach();
 }
 
 } // namespace blink