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

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

 /*
  * Copyright (C) 2005 Apple Computer, 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 116 matching lines @@
 
   // If the position is at the beginning of the top quoted content, we don't
   // need to break the quote. Instead, insert the break before the blockquote,
   // unless the position is as the end of the the quoted content.
   if (IsFirstVisiblePositionInNode(visible_pos, top_blockquote) &&
       !is_last_vis_pos_in_node) {
     InsertNodeBefore(break_element, top_blockquote, editing_state);
     if (editing_state->IsAborted())
       return;
     SetEndingSelection(SelectionInDOMTree::Builder()
-                           .Collapse(Position::BeforeNode(break_element))
+                           .Collapse(Position::BeforeNode(*break_element))
                            .SetIsDirectional(EndingSelection().IsDirectional())
                            .Build());
     RebalanceWhitespace();
     return;
   }
 
   // Insert a break after the top blockquote.
   InsertNodeAfter(break_element, top_blockquote, editing_state);
   if (editing_state->IsAborted())
     return;
 
   GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
 
   // If we're inserting the break at the end of the quoted content, we don't
   // need to break the quote.
   if (is_last_vis_pos_in_node) {
     SetEndingSelection(SelectionInDOMTree::Builder()
-                           .Collapse(Position::BeforeNode(break_element))
+                           .Collapse(Position::BeforeNode(*break_element))
                            .SetIsDirectional(EndingSelection().IsDirectional())
                            .Build());
     RebalanceWhitespace();
     return;
   }
 
   // Don't move a line break just after the caret.  Doing so would create an
   // extra, empty paragraph in the new blockquote.
   if (LineBreakExistsAtVisiblePosition(visible_pos)) {
     pos = NextPositionOf(pos, PositionMoveType::kGraphemeCluster);
@@ skipping 109 matching lines @@
     }
   }
 
   // Make sure the cloned block quote renders.
   AddBlockPlaceholderIfNeeded(cloned_blockquote, editing_state);
   if (editing_state->IsAborted())
     return;
 
   // Put the selection right before the break.
   SetEndingSelection(SelectionInDOMTree::Builder()
-                         .Collapse(Position::BeforeNode(break_element))
+                         .Collapse(Position::BeforeNode(*break_element))
                          .SetIsDirectional(EndingSelection().IsDirectional())
                          .Build());
   RebalanceWhitespace();
 }
 
 }  // namespace blink