Make Position::LastPositionInNode() to take const Node& instead of Node*

third_party/WebKit/Source/core/editing/VisibleUnitsLine.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
@@ skipping 502 matching lines @@
   // In this case, use the previous position of the computed logical end
   // position.
   if (!InSameLogicalLine(current_position, vis_pos))
     vis_pos = PreviousPositionOf(vis_pos);
 
   if (ContainerNode* editable_root =
           HighestEditableRoot(current_position.DeepEquivalent())) {
     if (!editable_root->contains(
             vis_pos.DeepEquivalent().ComputeContainerNode())) {
       return CreateVisiblePosition(
-          PositionTemplate<Strategy>::LastPositionInNode(editable_root));
+          PositionTemplate<Strategy>::LastPositionInNode(*editable_root));
     }
   }
 
   return HonorEditingBoundaryAtOrAfter(vis_pos,
                                        current_position.DeepEquivalent());
 }
 
 VisiblePosition LogicalEndOfLine(const VisiblePosition& current_position) {
   return LogicalEndOfLineAlgorithm<EditingStrategy>(current_position);
 }
@@ skipping 213 matching lines @@
   // to the end of the line we're on.
   Element* root_element = HasEditableStyle(*node, editable_type)
                               ? RootEditableElement(*node, editable_type)
                               : node->GetDocument().documentElement();
   if (!root_element)
     return VisiblePosition();
   return VisiblePosition::LastPositionInNode(root_element);
 }
 
 }  // namespace blink