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diff --git a/chrome/browser/chromeos/settings/system_settings_provider.h b/chrome/browser/chromeos/settings/system_settings_provider.h
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+++ b/chrome/browser/chromeos/settings/system_settings_provider.h
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+// 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_SETTINGS_SYSTEM_SETTINGS_PROVIDER_H_
+#define CHROME_BROWSER_CHROMEOS_SETTINGS_SYSTEM_SETTINGS_PROVIDER_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/chromeos/settings/cros_settings_provider.h"
+#include "chrome/browser/chromeos/system/timezone_settings.h"
+#include "third_party/icu/public/i18n/unicode/timezone.h"
+
+namespace base {
+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;
+
+ private:
+  // CrosSettingsProvider implementation.
+  virtual void DoSet(const std::string& path,
+                     const base::Value& in_value) OVERRIDE;
+
+  scoped_ptr<base::Value> timezone_value_;
+
+  DISALLOW_COPY_AND_ASSIGN(SystemSettingsProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_SETTINGS_SYSTEM_SETTINGS_PROVIDER_H_