Introduce PositionAlgorithm<Strategy>::editingPositionOf()

Source/core/layout/LayoutObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2981 matching lines @@
             // If it can be found, we prefer a visually equivalent position that is editable.
             const Position position = Position(node, offset);
             Position candidate = position.downstream(CanCrossEditingBoundary);
             if (candidate.anchorNode()->hasEditableStyle())
                 return PositionWithAffinity(candidate, affinity);
             candidate = position.upstream(CanCrossEditingBoundary);
             if (candidate.anchorNode()->hasEditableStyle())
                 return PositionWithAffinity(candidate, affinity);
         }
         // FIXME: Eliminate legacy editing positions
-        return PositionWithAffinity(createLegacyEditingPosition(node, offset), affinity);
+        return PositionWithAffinity(Position::editingPositionOf(node, offset), affinity);
     }
 
     // We don't want to cross the boundary between editable and non-editable
     // regions of the document, but that is either impossible or at least
     // extremely unlikely in any normal case because we stop as soon as we
     // find a single non-anonymous layoutObject.
 
     // Find a nearby non-anonymous layoutObject.
     LayoutObject* child = this;
     while (LayoutObject* parent = child->parent()) {
@@ skipping 384 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n");
     }
 }
 
 #endif