Move static member function normalizeRange() out from VisibleSelection

Source/core/editing/Editor.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 1231 matching lines @@
         else
             searchRange = EphemeralRangeTemplate<Strategy>(documentRange.startPosition(), referenceRange.startPosition());
     }
 
     RefPtrWillBeRawPtr<Range> resultRange = findStringBetweenPositions(target, searchRange, options);
 
     // If we started in the reference range and the found range exactly matches
     // the reference range, find again. Build a selection with the found range
     // to remove collapsed whitespace. Compare ranges instead of selection
     // objects to ignore the way that the current selection was made.
-    if (resultRange && startInReferenceRange && VisibleSelection::normalizeRange(EphemeralRangeTemplate<Strategy>(resultRange.get())) == referenceRange) {
+    if (resultRange && startInReferenceRange && normalizeRange(EphemeralRangeTemplate<Strategy>(resultRange.get())) == referenceRange) {
         if (forward)
             searchRange = EphemeralRangeTemplate<Strategy>(fromPositionInDOMTree<Strategy>(resultRange->endPosition()), searchRange.endPosition());
         else
             searchRange = EphemeralRangeTemplate<Strategy>(searchRange.startPosition(), fromPositionInDOMTree<Strategy>(resultRange->startPosition()));
         resultRange = findStringBetweenPositions(target, searchRange, options);
     }
 
     if (!resultRange && options & WrapAround)
         return findStringBetweenPositions(target, documentRange, options);
 
@@ skipping 38 matching lines @@
 }
 
 DEFINE_TRACE(Editor)
 {
     visitor->trace(m_frame);
     visitor->trace(m_lastEditCommand);
     visitor->trace(m_mark);
 }
 
 } // namespace blink