Rename SpellCheckCommon namespace to chrome.

chrome/common/spellcheck_common.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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_COMMON_SPELLCHECK_COMMON_H_
 #define CHROME_COMMON_SPELLCHECK_COMMON_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 class FilePath;
 
-namespace SpellCheckCommon {
+namespace chrome {
+namespace spellcheck_common {
 
 // Max number of dictionary suggestions.
 static const int kMaxSuggestions = 5;
 
 static const int kMaxAutoCorrectWordSize = 8;
 
 FilePath GetVersionedFileName(const std::string& input_language,
                               const FilePath& dict_dir);
 
 std::string GetCorrespondingSpellCheckLanguage(const std::string& language);
 
 // Get SpellChecker supported languages.
 void SpellCheckLanguages(std::vector<std::string>* languages);
 
-}  // namespace SpellCheckCommon
+}  // namespace spellcheck_common
+}  // namespace chrome
 
 #endif  // CHROME_COMMON_SPELLCHECK_COMMON_H_