Add language_prefs namespace to language_preferences.h.

chrome/browser/chromeos/options/language_mozc_config_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_OPTIONS_LANGUAGE_MOZC_CONFIG_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_OPTIONS_LANGUAGE_MOZC_CONFIG_VIEW_H_
 #pragma once
 
 #include <string>
 
@@ skipping 65 matching lines @@
   // Resets all the preferences to the default values.
   void ResetToDefaults();
 
   views::View* contents_;
 
   views::Button* reset_to_defaults_button_;
 
   struct MozcPrefAndAssociatedCheckbox {
     BooleanPrefMember boolean_pref;
     views::Checkbox* checkbox;
-  } prefs_and_checkboxes_[kNumMozcBooleanPrefs];
+  } prefs_and_checkboxes_[language_prefs::kNumMozcBooleanPrefs];
 
   struct MozcPrefAndAssociatedCombobox {
     StringPrefMember multiple_choice_pref;
     LanguageComboboxModel<const char*>* combobox_model;
     LanguageCombobox* combobox;
-  } prefs_and_comboboxes_[kNumMozcMultipleChoicePrefs];
+  } prefs_and_comboboxes_[language_prefs::kNumMozcMultipleChoicePrefs];
 
   struct MozcPrefAndAssociatedSlider {
     IntegerPrefMember integer_pref;
     views::Slider* slider;
-  } prefs_and_sliders_[kNumMozcIntegerPrefs];
+  } prefs_and_sliders_[language_prefs::kNumMozcIntegerPrefs];
 
   DISALLOW_COPY_AND_ASSIGN(LanguageMozcConfigView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_LANGUAGE_MOZC_CONFIG_VIEW_H_