Get rid of redundant member function PositionAlgorithm<Strategy>::{upstream,downstream}

Source/core/layout/HitTestResult.cpp

 /*
  * Copyright (C) 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
 */
 
 #include "config.h"
 #include "core/layout/HitTestResult.h"
 
 #include "core/HTMLNames.h"
 #include "core/dom/PseudoElement.h"
 #include "core/dom/shadow/ComposedTreeTraversal.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/FrameSelection.h"
+#include "core/editing/VisibleUnits.h"
 #include "core/editing/markers/DocumentMarkerController.h"
 #include "core/fetch/ImageResource.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLAreaElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLMapElement.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLTextAreaElement.h"
@@ skipping 116 matching lines @@
 }
 
 PositionWithAffinity HitTestResult::position() const
 {
     if (!m_innerPossiblyPseudoNode)
         return PositionWithAffinity();
     LayoutObject* layoutObject = this->layoutObject();
     if (!layoutObject)
         return PositionWithAffinity();
     if (m_innerPossiblyPseudoNode->isPseudoElement() && m_innerPossiblyPseudoNode->pseudoId() == BEFORE)
-        return Position(m_innerNode, PositionAnchorType::BeforeChildren).downstream();
+        return mostForwardCaretPosition(Position(m_innerNode, PositionAnchorType::BeforeChildren));
     return layoutObject->positionForPoint(localPoint());
 }
 
 LayoutObject* HitTestResult::layoutObject() const
 {
     return m_innerNode ? m_innerNode->layoutObject() : 0;
 }
 
 void HitTestResult::setToShadowHostIfInUserAgentShadowRoot()
 {
@@ skipping 346 matching lines @@
     else if (isHTMLMapElement(m_innerNode))
         imageMapImageElement = toHTMLMapElement(m_innerNode)->imageElement();
 
     if (!imageMapImageElement)
         return m_innerNode.get();
 
     return imageMapImageElement;
 }
 
 } // namespace blink