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

third_party/WebKit/Source/core/html/TextControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 441 matching lines @@
                     cached_selection_end_ != end ||
                     cached_selection_direction_ != direction;
   cached_selection_start_ = start;
   cached_selection_end_ = end;
   cached_selection_direction_ = direction;
   return did_change;
 }
 
 VisiblePosition TextControlElement::VisiblePositionForIndex(int index) const {
   if (index <= 0)
-    return VisiblePosition::FirstPositionInNode(InnerEditorElement());
+    return VisiblePosition::FirstPositionInNode(*InnerEditorElement());
   Position start, end;
   bool selected = Range::selectNodeContents(InnerEditorElement(), start, end);
   if (!selected)
     return VisiblePosition();
   CharacterIterator it(start, end);
   it.Advance(index - 1);
   return CreateVisiblePosition(it.EndPosition(), TextAffinity::kUpstream);
 }
 
 // TODO(yosin): We should move |TextControlElement::indexForVisiblePosition()|
@@ skipping 498 matching lines @@
 
 void TextControlElement::CopyNonAttributePropertiesFromElement(
     const Element& source) {
   const TextControlElement& source_element =
       static_cast<const TextControlElement&>(source);
   last_change_was_user_edit_ = source_element.last_change_was_user_edit_;
   HTMLFormControlElement::CopyNonAttributePropertiesFromElement(source);
 }
 
 }  // namespace blink