Reenabled ChromeOS system setting for timezone selection....

chrome/browser/chromeos/dom_ui/system_settings_provider.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_DOM_UI_SYSTEM_SETTINGS_PROVIDER_H_
+#define CHROME_BROWSER_CHROMEOS_DOM_UI_SYSTEM_SETTINGS_PROVIDER_H_
+
+#include <vector>
+
+#include "base/string16.h"
+#include "chrome/browser/chromeos/cros/system_library.h"
+#include "chrome/browser/chromeos/cros_settings_provider.h"
+#include "third_party/icu/public/i18n/unicode/timezone.h"
+
+class Value;
+class ListValue;
+
+namespace chromeos {
+
+class SystemSettingsProvider : public CrosSettingsProvider,
+                               public SystemLibrary::Observer {
+ public:
+  SystemSettingsProvider();
+  virtual ~SystemSettingsProvider();
+
+  // CrosSettingsProvider overrides.
+  virtual void Set(const std::string& path, Value* in_value);
+  virtual bool Get(const std::string& path, Value** out_value) const;
+  virtual bool HandlesSetting(const std::string& path);
+
+  // Overridden from SystemLibrary::Observer:
+  virtual void TimezoneChanged(const icu::TimeZone& timezone);
+
+  // Creates the map of timezones used by the options page.
+  ListValue* GetTimezoneList();
+
+ private:
+
+  // 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);
+
+  // Timezones.
+  std::vector<icu::TimeZone*> timezones_;
+
+  DISALLOW_COPY_AND_ASSIGN(SystemSettingsProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_DOM_UI_SYSTEM_SETTINGS_PROVIDER_H_