Use base namespace for string16 in chrome/renderer.

chrome/renderer/spellchecker/spellcheck_language.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_LANGUAGE_H_
 #define CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_LANGUAGE_H_
 
 #include <queue>
 #include <string>
 #include <vector>
@@ skipping 21 matching lines @@
   // In addition, finds the suggested words for a given word
   // and puts them into |*optional_suggestions|.
   // If the word is spelled correctly, the vector is empty.
   // If optional_suggestions is NULL, suggested words will not be looked up.
   // Note that doing suggest lookups can be slow.
   bool SpellCheckWord(const char16* in_word,
                       int in_word_len,
                       int tag,
                       int* misspelling_start,
                       int* misspelling_len,
-                      std::vector<string16>* optional_suggestions);
+                      std::vector<base::string16>* optional_suggestions);
 
   // Initialize |spellcheck_| if that hasn't happened yet.
   bool InitializeIfNeeded();
 
   // Return true if the underlying spellcheck engine is enabled.
   bool IsEnabled();
 
  private:
   friend class SpellCheckTest;
 
   // Returns whether or not the given word is a contraction of valid words
   // (e.g. "word:word").
-  bool IsValidContraction(const string16& word, int tag);
+  bool IsValidContraction(const base::string16& word, int tag);
 
   // Represents character attributes used for filtering out characters which
   // are not supported by this SpellCheck object.
   SpellcheckCharAttribute character_attributes_;
 
   // Represents word iterators used in this spellchecker. The |text_iterator_|
   // splits text provided by WebKit into words, contractions, or concatenated
   // words. The |contraction_iterator_| splits a concatenated word extracted by
   // |text_iterator_| into word components so we can treat a concatenated word
   // consisting only of correct words as a correct word.
   SpellcheckWordIterator text_iterator_;
   SpellcheckWordIterator contraction_iterator_;
 
   // Pointer to a platform-specific spelling engine, if it is in use. This
   // should only be set if hunspell is not used. (I.e. on OSX, for now)
   scoped_ptr<SpellingEngine> platform_spelling_engine_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellcheckLanguage);
 };
 
 #endif  // CHROME_RENDERER_SPELLCHECKER_SPELLCHECK_LANGUAGE_H_