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diff --git a/chrome/browser/chromeos/proxy_cros_settings_provider.h b/chrome/browser/chromeos/proxy_cros_settings_provider.h
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+++ b/chrome/browser/chromeos/proxy_cros_settings_provider.h
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+// 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_PROXY_CROS_SETTINGS_PROVIDER_H_
+#define CHROME_BROWSER_CHROMEOS_PROXY_CROS_SETTINGS_PROVIDER_H_
+#pragma once
+
+#include "base/singleton.h"
+#include "base/values.h"
+#include "chrome/browser/chromeos/cros_settings_provider.h"
+#include "chrome/browser/chromeos/proxy_config_service_impl.h"
+
+namespace chromeos {
+
+class ProxyCrosSettingsProvider : public CrosSettingsProvider {
+ public:
+  ProxyCrosSettingsProvider();
+  // CrosSettingsProvider implementation.
+  virtual bool Get(const std::string& path, Value** out_value) const;
+  virtual bool HandlesSetting(const std::string& path);
+
+ private:
+  // CrosSettingsProvider implementation.
+  virtual void DoSet(const std::string& path, Value* value);
+
+  chromeos::ProxyConfigServiceImpl* GetConfigService() const;
+
+  void AppendPortIfValid(const char* port_cache_key, std::string* server_uri);
+
+  void FormServerUriIfValid(const char* host_cache_key,
+      const std::string& port_num, std::string* server_uri);
+
+  Value* CreateServerHostValue(
+      const ProxyConfigServiceImpl::ProxyConfig::ManualProxy& proxy) const;
+
+  Value* CreateServerPortValue(
+      const ProxyConfigServiceImpl::ProxyConfig::ManualProxy& proxy) const;
+
+  void SetCache(const std::string& key, const Value* value);
+
+  // A cache to keep whatever user typed.
+  DictionaryValue cache_;
+
+  DISALLOW_COPY_AND_ASSIGN(ProxyCrosSettingsProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_PROXY_CROS_SETTINGS_PROVIDER_H_