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

third_party/WebKit/Source/core/editing/commands/ApplyBlockElementCommand.cpp

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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 317 matching lines @@
       if (is_end_and_end_of_last_paragraph_on_same_node) {
         if (end_of_last_paragraph.OffsetInContainerNode() ==
             end.OffsetInContainerNode())
           end_of_last_paragraph =
               LastPositionInOrAfterNode(end_container->previousSibling());
         else
           end_of_last_paragraph = Position(
               end_container, end_of_last_paragraph.OffsetInContainerNode() -
                                  end.OffsetInContainerNode());
       }
-      end = Position::LastPositionInNode(end_container->previousSibling());
+      end = Position::LastPositionInNode(*end_container->previousSibling());
     }
   }
 }
 
 VisiblePosition
 ApplyBlockElementCommand::EndOfNextParagrahSplittingTextNodesIfNeeded(
     VisiblePosition& end_of_current_paragraph,
     Position& end_of_last_paragraph,
     Position& start,
     Position& end) {
@@ skipping 62 matching lines @@
 }
 
 HTMLElement* ApplyBlockElementCommand::CreateBlockElement() const {
   HTMLElement* element = CreateHTMLElement(GetDocument(), tag_name_);
   if (inline_style_.length())
     element->setAttribute(styleAttr, inline_style_);
   return element;
 }
 
 }  // namespace blink