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

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

 /*
  * Copyright (C) 2006, 2010 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 509 matching lines @@
   }
   if (editing_state->IsAborted())
     return;
 
   GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
 
   // Make |start| and |end| valid again.
   start = CreateVisiblePosition(start_position);
   end = CreateVisiblePosition(end_position);
 
-  VisiblePosition insertion_point = VisiblePosition::BeforeNode(placeholder);
+  VisiblePosition insertion_point = VisiblePosition::BeforeNode(*placeholder);
   MoveParagraphs(start, end, insertion_point, editing_state, kPreserveSelection,
                  kPreserveStyle, list_child_node);
 }
 
 static HTMLElement* AdjacentEnclosingList(const VisiblePosition& pos,
                                           const VisiblePosition& adjacent_pos,
                                           const HTMLQualifiedName& list_tag) {
   HTMLElement* list_element =
       OutermostEnclosingList(adjacent_pos.DeepEquivalent().AnchorNode());
 
@@ skipping 132 matching lines @@
     return;
   // Inserting list element and list item list may change start of pargraph
   // to move. We calculate start of paragraph again.
   GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
   const VisiblePosition& valid_pos =
       CreateVisiblePosition(pos.ToPositionWithAffinity());
   const VisiblePosition& start =
       StartOfParagraph(valid_pos, kCanSkipOverEditingBoundary);
   const VisiblePosition& end =
       EndOfParagraph(valid_pos, kCanSkipOverEditingBoundary);
-  MoveParagraph(start, end, VisiblePosition::BeforeNode(placeholder),
+  MoveParagraph(start, end, VisiblePosition::BeforeNode(*placeholder),
                 editing_state, kPreserveSelection);
 }
 
 DEFINE_TRACE(InsertListCommand) {
   CompositeEditCommand::Trace(visitor);
 }
 
 }  // namespace blink