Add language_prefs namespace to language_preferences.h.

chrome/browser/chromeos/language_preferences.cc

 // Copyright (c) 2010 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.
 
 #include "base/basictypes.h"
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/common/pref_names.h"
 #include "grit/generated_resources.h"
 
 namespace chromeos {
+namespace language_prefs {
 
 // ---------------------------------------------------------------------------
 // For ibus-daemon
 // ---------------------------------------------------------------------------
 const char kGeneralSectionName[] = "general";
 const char kHotKeySectionName[] = "general/hotkey";
 const char kPreloadEnginesConfigName[] = "preload_engines";
 const char kNextEngineInMenuConfigName[] = "next_engine_in_menu";
 const char kPreviousEngineConfigName[] = "previous_engine";
 // TODO(yusukes): Check if the "Kana/Eisu" key in the Japanese keyboard for
@@ skipping 374 matching lines @@
 };
 const LanguageIntegerRangePreference kXkbAutoRepeatIntervalPref = {
   prefs::kLanguageXkbAutoRepeatInterval, 33, 9, 100,
   NULL,  // does not use the ibus configuration service.
   IDS_OPTIONS_SETTINGS_LANGUAGES_XKB_KEY_REPEAT_SPEED,
 };
 
 const char kPreferredKeyboardLayout[] = "PreferredKeyboardLayout";
 const char kHardwareKeyboardLayout[] = "xkb:us::eng";
 
-}  // chromeos
+}  // namespace language_prefs
+}  // namespace chromeos