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

third_party/WebKit/Source/core/editing/SurroundingText.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 56 matching lines @@
   // or the input element's end. It will then be updated to only contain the
   // text in the right range around the selection.
   DCHECK_EQ(RootEditableElementOf(start_position),
             RootEditableElementOf(end_position));
   Element* const root_editable = RootEditableElementOf(start_position);
   Element* const root_element =
       root_editable ? root_editable : document->documentElement();
 
   CharacterIterator forward_iterator(
       end_position,
-      Position::LastPositionInNode(root_element).ParentAnchoredEquivalent(),
+      Position::LastPositionInNode(*root_element).ParentAnchoredEquivalent(),
       TextIteratorBehavior::Builder().SetStopsOnFormControls(true).Build());
   // FIXME: why do we stop going trough the text if we were not able to select
   // something on the right?
   if (!forward_iterator.AtEnd())
     forward_iterator.Advance(max_length - half_max_length);
 
   EphemeralRange forward_range = forward_iterator.Range();
   if (forward_range.IsNull() ||
       !Range::Create(*document, end_position, forward_range.StartPosition())
            ->GetText()
@@ skipping 33 matching lines @@
 
 unsigned SurroundingText::StartOffsetInContent() const {
   return start_offset_in_content_;
 }
 
 unsigned SurroundingText::EndOffsetInContent() const {
   return end_offset_in_content_;
 }
 
 }  // namespace blink