Remove usages of temporary Range objects that end up registered on the

Source/core/editing/TextIterator.h

 /*
  * Copyright (C) 2004, 2006, 2009 Apple 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 214 matching lines @@
     bool m_emitsObjectReplacementCharacter;
 };
 
 // Iterates through the DOM range, returning all the text, and 0-length boundaries
 // at points where replaced elements break up the text flow. The text comes back in
 // chunks so as to optimize for performance of the iteration.
 class SimplifiedBackwardsTextIterator {
     STACK_ALLOCATED();
 public:
     explicit SimplifiedBackwardsTextIterator(const Range*, TextIteratorBehaviorFlags = TextIteratorDefaultBehavior);
+    SimplifiedBackwardsTextIterator(const Position& start, const Position& end, TextIteratorBehaviorFlags = TextIteratorDefaultBehavior);
 
     bool atEnd() const { return !m_positionNode || m_shouldStop; }
     void advance();
 
     int length() const { return m_textLength; }
 
     Node* node() const { return m_node; }
 
     template<typename BufferType>
     void prependTextTo(BufferType& output)
     {
         if (!m_textLength)
             return;
         if (m_singleCharacterBuffer)
             output.prepend(&m_singleCharacterBuffer, 1);
         else
             m_textContainer.prependTo(output, m_textOffset, m_textLength);
     }
 
     PassRefPtrWillBeRawPtr<Range> range() const;
 
     Node* startContainer() const;
     int endOffset() const;
     Position startPosition() const;
 
 private:
+    void init(Node* startNode, Node* endNode, int startOffset, int endOffset);
     void exitNode();
     bool handleTextNode();
     RenderText* handleFirstLetter(int& startOffset, int& offsetInNode);
     bool handleReplacedElement();
     bool handleNonTextNode();
     void emitCharacter(UChar, Node*, int startOffset, int endOffset);
     bool advanceRespectingRange(Node*);
 
     // Current position, not necessarily of the text being returned, but position
     // as we walk through the DOM tree.
@@ skipping 76 matching lines @@
     int m_runOffset;
     bool m_atBreak;
 
     TextIterator m_textIterator;
 };
 
 class BackwardsCharacterIterator {
     STACK_ALLOCATED();
 public:
     explicit BackwardsCharacterIterator(const Range*, TextIteratorBehaviorFlags = TextIteratorDefaultBehavior);
+    BackwardsCharacterIterator(const Position&, const Position&, TextIteratorBehaviorFlags = TextIteratorDefaultBehavior);
 
     void advance(int);
 
     bool atEnd() const { return m_textIterator.atEnd(); }
 
     PassRefPtrWillBeRawPtr<Range> range() const;
 
     Position endPosition() const;
 
 private:
@@ skipping 22 matching lines @@
 private:
     Vector<UChar> m_buffer;
     // Did we have to look ahead in the textIterator to confirm the current chunk?
     bool m_didLookAhead;
     TextIterator m_textIterator;
 };
 
 }
 
 #endif