Avoid allocating temporary ranges in connection with text and character iterators.

Source/core/editing/SpellChecker.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 233 matching lines @@
             badGrammarPhrase = foundItem;
             grammarPhraseOffset = foundOffset;
         }
     } else {
         misspelledWord = TextCheckingHelper(spellCheckerClient(), spellingSearchRange).findFirstMisspelling(misspellingOffset, false, firstMisspellingRange);
         grammarSearchRange = spellingSearchRange->cloneRange();
         if (!misspelledWord.isEmpty()) {
             // Stop looking at start of next misspelled word
             CharacterIterator chars(grammarSearchRange.get());
             chars.advance(misspellingOffset);
-            grammarSearchRange->setEnd(chars.range()->startContainer(), chars.range()->startOffset(), IGNORE_EXCEPTION);
+            grammarSearchRange->setEnd(chars.startContainer(), chars.startOffset(), IGNORE_EXCEPTION);
         }
 
         if (isGrammarCheckingEnabled())
             badGrammarPhrase = TextCheckingHelper(spellCheckerClient(), grammarSearchRange).findFirstBadGrammar(grammarDetail, grammarPhraseOffset, false);
     }
 
     // If we found neither bad grammar nor a misspelled word, wrap and try again (but don't bother if we started at the beginning of the
     // block rather than at a selection).
     if (startedWithSelection && !misspelledWord && !badGrammarPhrase) {
         spellingSearchRange->setStart(topNode, 0, IGNORE_EXCEPTION);
@@ skipping 10 matching lines @@
                 badGrammarPhrase = foundItem;
                 grammarPhraseOffset = foundOffset;
             }
         } else {
             misspelledWord = TextCheckingHelper(spellCheckerClient(), spellingSearchRange).findFirstMisspelling(misspellingOffset, false, firstMisspellingRange);
             grammarSearchRange = spellingSearchRange->cloneRange();
             if (!misspelledWord.isEmpty()) {
                 // Stop looking at start of next misspelled word
                 CharacterIterator chars(grammarSearchRange.get());
                 chars.advance(misspellingOffset);
-                grammarSearchRange->setEnd(chars.range()->startContainer(), chars.range()->startOffset(), IGNORE_EXCEPTION);
+                grammarSearchRange->setEnd(chars.startContainer(), chars.startOffset(), IGNORE_EXCEPTION);
             }
 
             if (isGrammarCheckingEnabled())
                 badGrammarPhrase = TextCheckingHelper(spellCheckerClient(), grammarSearchRange).findFirstBadGrammar(grammarDetail, grammarPhraseOffset, false);
         }
     }
 
     if (!badGrammarPhrase.isEmpty()) {
         // We found bad grammar. Since we only searched for bad grammar up to the first misspelled word, the bad grammar
         // takes precedence and we ignore any potential misspelled word. Select the grammar detail, update the spelling
@@ skipping 631 matching lines @@
 }
 
 void SpellChecker::requestTextChecking(const Element& element)
 {
     RefPtrWillBeRawPtr<Range> rangeToCheck = rangeOfContents(const_cast<Element*>(&element));
     m_spellCheckRequester->requestCheckingFor(SpellCheckRequest::create(TextCheckingTypeSpelling | TextCheckingTypeGrammar, TextCheckingProcessBatch, rangeToCheck, rangeToCheck));
 }
 
 
 } // namespace blink