Get rid of a redundant function alias lastPositionInNode()

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 49 matching lines @@
     const unsigned halfMaxLength = maxLength / 2;
 
     Document* document = startPosition.document();
     // The position will have no document if it is null (as in no position).
     if (!document || !document->documentElement())
         return;
 
     // The forward range starts at the selection end and ends at the document's
     // end. It will then be updated to only contain the text in the text in the
     // right range around the selection.
-    CharacterIterator forwardIterator(endPosition, lastPositionInNode(document->documentElement()).parentAnchoredEquivalent(), TextIteratorStopsOnFormControls);
+    CharacterIterator forwardIterator(endPosition, Position::lastPositionInNode(document->documentElement()).parentAnchoredEquivalent(), TextIteratorStopsOnFormControls);
     // FIXME: why do we stop going trough the text if we were not able to select something on the right?
     if (!forwardIterator.atEnd())
         forwardIterator.advance(maxLength - halfMaxLength);
 
     EphemeralRange forwardRange = forwardIterator.range();
     if (forwardRange.isNull() || !Range::create(*document, endPosition, forwardRange.startPosition())->text().length())
         return;
 
     // Same as with the forward range but with the backward range. The range
     // starts at the document's start and ends at the selection start and will
@@ skipping 40 matching lines @@
 {
     return m_startOffsetInContent;
 }
 
 unsigned SurroundingText::endOffsetInContent() const
 {
     return m_endOffsetInContent;
 }
 
 } // namespace blink