Move a member function inRenderedText() out from PositionAlgorithm template class

Source/core/editing/VisibleUnits.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1540 matching lines @@
 
     if (isHTMLBRElement(*position1.anchorNode()) && position2.isCandidate())
         return true;
 
     if (isHTMLBRElement(*position2.anchorNode()) && position1.isCandidate())
         return true;
 
     if (!inSameContainingBlockFlowElement(position1.anchorNode(), position2.anchorNode()))
         return true;
 
-    if (position1.anchorNode()->isTextNode() && !position1.inRenderedText())
+    if (position1.anchorNode()->isTextNode() && !inRenderedText(position1))
         return false;
 
-    if (position2.anchorNode()->isTextNode() && !position2.inRenderedText())
+    if (position2.anchorNode()->isTextNode() && !inRenderedText(position2))
         return false;
 
     const int renderedOffset1 = renderedOffsetOf(position1);
     const int renderedOffset2 = renderedOffsetOf(position2);
 
     if (layoutObject == posLayoutObject && renderedOffset1 == renderedOffset2)
         return false;
 
     InlineBoxPosition boxPosition1 = position1.computeInlineBoxPosition(TextAffinity::Downstream);
     InlineBoxPosition boxPosition2 = position2.computeInlineBoxPosition(TextAffinity::Downstream);
@@ skipping 21 matching lines @@
 
     if (previousRenderedEditable(position1.anchorNode()) == position2.anchorNode()
         && !renderedOffset1 && renderedOffset2 == caretMaxOffset(position2.anchorNode())) {
         return false;
     }
 
     return true;
 }
 
 }