Make rendersInDifferentPosition() to work with AfterAnchor and AfterChildren positions properly

Source/core/dom/Position.cpp

Index: Source/core/dom/Position.cpp
diff --git a/Source/core/dom/Position.cpp b/Source/core/dom/Position.cpp
index e0b9938087eb41c66f78832d8e6f1f3a862d8179..5128f109999a9d3b4bd3566533360e2ab8a9b55d 100644
--- a/Source/core/dom/Position.cpp
+++ b/Source/core/dom/Position.cpp
@@ -1054,11 +1054,11 @@ bool PositionAlgorithm<Strategy>::rendersInDifferentPosition(const PositionAlgor
         if (isHTMLBRElement(*anchorNode()))
             return false;
 
-        if (m_offset == pos.deprecatedEditingOffset())
+        if (deprecatedEditingOffset() == pos.deprecatedEditingOffset())
             return false;
 
         if (!anchorNode()->isTextNode() && !pos.anchorNode()->isTextNode()) {
-            if (m_offset != pos.deprecatedEditingOffset())
+            if (deprecatedEditingOffset() != pos.deprecatedEditingOffset())
                 return true;
         }
     }