Get rid of flat tree version of createVisibleSelection() taking two PositionInFlatTree

third_party/WebKit/Source/core/editing/VisibleSelection.h

 /*
  * Copyright (C) 2004 Apple Computer, 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 216 matching lines @@
                        TextAffinity = SelDefaultAffinity,
                        bool isDirectional = false);
 CORE_EXPORT VisibleSelection createVisibleSelection(const VisiblePosition&,
                                                     const VisiblePosition&,
                                                     bool isDirectional = false);
 CORE_EXPORT VisibleSelection createVisibleSelection(const PositionWithAffinity&,
                                                     bool isDirectional = false);
 
 CORE_EXPORT VisibleSelectionInFlatTree
 createVisibleSelection(const SelectionInFlatTree&);
-CORE_EXPORT VisibleSelectionInFlatTree
-createVisibleSelection(const PositionInFlatTree& base,
-                       const PositionInFlatTree& extent,
-                       TextAffinity = SelDefaultAffinity,
-                       bool isDirectional = false);
 
 // We don't yet support multi-range selections, so we only ever have one range
 // to return.
 CORE_EXPORT EphemeralRange firstEphemeralRangeOf(const VisibleSelection&);
 
 // TODO(sof): move more firstRangeOf() uses to be over EphemeralRange instead.
 CORE_EXPORT Range* firstRangeOf(const VisibleSelection&);
 
 CORE_EXPORT std::ostream& operator<<(std::ostream&, const VisibleSelection&);
 CORE_EXPORT std::ostream& operator<<(std::ostream&,
                                      const VisibleSelectionInFlatTree&);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::VisibleSelection&);
 void showTree(const blink::VisibleSelection*);
 void showTree(const blink::VisibleSelectionInFlatTree&);
 void showTree(const blink::VisibleSelectionInFlatTree*);
 #endif
 
 #endif  // VisibleSelection_h