Refactored code for timezone settings.

chrome/browser/chromeos/system_settings_provider.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_BROWSER_CHROMEOS_SYSTEM_SETTINGS_PROVIDER_H_
 #define CHROME_BROWSER_CHROMEOS_SYSTEM_SETTINGS_PROVIDER_H_
 
 #include <string>
-#include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
 #include "chrome/browser/chromeos/cros_settings_provider.h"
 #include "chrome/browser/chromeos/system/timezone_settings.h"
 #include "third_party/icu/public/i18n/unicode/timezone.h"
 
 namespace base {
-class ListValue;
 class Value;
 }
 
 namespace chromeos {
 
 class SystemSettingsProvider : public CrosSettingsProvider,
                                public system::TimezoneSettings::Observer {
  public:
   explicit SystemSettingsProvider(const NotifyObserversCallback& notify_cb);
   virtual ~SystemSettingsProvider();
 
   // CrosSettingsProvider implementation.
   virtual const base::Value* Get(const std::string& path) const OVERRIDE;
   virtual TrustedStatus PrepareTrustedValues(
       const base::Closure& callback) OVERRIDE;
   virtual bool HandlesSetting(const std::string& path) const OVERRIDE;
   virtual void Reload() OVERRIDE;
 
   // TimezoneSettings::Observer implementation.
   virtual void TimezoneChanged(const icu::TimeZone& timezone) OVERRIDE;
 
-  // Creates the map of timezones used by the options page.
-  base::ListValue* GetTimezoneList();
-
  private:
   // CrosSettingsProvider implementation.
   virtual void DoSet(const std::string& path,
                      const base::Value& in_value) OVERRIDE;
 
-  // Gets timezone name.
-  static string16 GetTimezoneName(const icu::TimeZone& timezone);
-
-  // Gets timezone ID which is also used as timezone pref value.
-  static string16 GetTimezoneID(const icu::TimeZone& timezone);
-
-  // Gets timezone object from its id.
-  const icu::TimeZone* GetTimezone(const string16& timezone_id);
-
-  // Gets a timezone id from a timezone in |timezones_| that has the same
-  // rule of given |timezone|.
-  // One timezone could have multiple timezones,
-  // e.g.
-  //   US/Pacific == America/Los_Angeles
-  // We should always use the known timezone id when passing back as
-  // pref values.
-  string16 GetKnownTimezoneID(const icu::TimeZone& timezone) const;
-
-  // Timezones.
-  std::vector<icu::TimeZone*> timezones_;
-
   scoped_ptr<base::Value> timezone_value_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemSettingsProvider);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_SETTINGS_PROVIDER_H_