Move static member function normalizeRange() out from VisibleSelection

Source/core/editing/Editor.cpp

Index: Source/core/editing/Editor.cpp
diff --git a/Source/core/editing/Editor.cpp b/Source/core/editing/Editor.cpp
index 1413dffef72c5129fd432479e0c289810309a963..29ce3c945d4d161b89d18e152f0d7719b6149d5f 100644
--- a/Source/core/editing/Editor.cpp
+++ b/Source/core/editing/Editor.cpp
@@ -1249,7 +1249,7 @@ static PassRefPtrWillBeRawPtr<Range> findRangeOfStringAlgorithm(Document& docume
     // 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