Reduce usage of VisibleSelection::setBase() and setExtent()

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 57 matching lines @@
   TextAffinity affinity() const { return m_affinity; }
 
   // TODO(yosin): To make |VisibleSelection| as immutable object, we should
   // get rid of |setBase()| and |setExtent()| by replacing them with
   // |createVisibleSelection()|.
   void setBase(const PositionTemplate<Strategy>&);
   void setBase(const VisiblePositionTemplate<Strategy>&);
   void setExtent(const PositionTemplate<Strategy>&);
   void setExtent(const VisiblePositionTemplate<Strategy>&);
 
+  SelectionTemplate<Strategy> asSelection() const;
   PositionTemplate<Strategy> base() const { return m_base; }
   PositionTemplate<Strategy> extent() const { return m_extent; }
   PositionTemplate<Strategy> start() const { return m_start; }
   PositionTemplate<Strategy> end() const { return m_end; }
 
   VisiblePositionTemplate<Strategy> visibleStart() const {
     return createVisiblePosition(
         m_start, isRange() ? TextAffinity::Downstream : affinity());
   }
   VisiblePositionTemplate<Strategy> visibleEnd() const {
@@ skipping 137 matching lines @@
 
 #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