Revert "Refactored NetworkConfigurationUpdater to read policy from the PolicyService."

chrome/browser/policy/network_configuration_updater.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_POLICY_NETWORK_CONFIGURATION_UPDATER_H_
 #define CHROME_BROWSER_POLICY_NETWORK_CONFIGURATION_UPDATER_H_
 #pragma once
 
 #include <string>
 
 #include "chrome/browser/chromeos/cros/network_ui_data.h"
-#include "chrome/browser/policy/policy_service.h"
-
-namespace base {
-class Value;
-}
+#include "chrome/browser/policy/configuration_policy_provider.h"
 
 namespace chromeos {
 class NetworkLibrary;
 }
 
 namespace policy {
 
 class PolicyMap;
 
 // Keeps track of the network configuration policy settings and updates the
 // network definitions whenever the configuration changes.
-class NetworkConfigurationUpdater {
+class NetworkConfigurationUpdater
+    : public ConfigurationPolicyProvider::Observer {
  public:
-  NetworkConfigurationUpdater(PolicyService* policy_service,
+  NetworkConfigurationUpdater(ConfigurationPolicyProvider* provider,
                               chromeos::NetworkLibrary* network_library);
   virtual ~NetworkConfigurationUpdater();
 
+  // ConfigurationPolicyProvider::Observer:
+  virtual void OnUpdatePolicy(ConfigurationPolicyProvider* provider) OVERRIDE;
+
   // Empty network configuration blob.
   static const char kEmptyConfiguration[];
 
  private:
+  // Grabs network configuration from policy and applies it.
+  void Update();
+
   // Extracts ONC string from |policy_map| and pushes the configuration to
   // |network_library_| if it's different from |*cached_value| (which is
   // updated).
-  void ApplyNetworkConfiguration(chromeos::NetworkUIData::ONCSource onc_source,
-                                 std::string* cached_value,
-                                 const base::Value* previous,
-                                 const base::Value* current);
+  void ApplyNetworkConfiguration(const PolicyMap& policy_map,
+                                 const char* policy_name,
+                                 chromeos::NetworkUIData::ONCSource onc_source,
+                                 std::string* cached_value);
 
-  // Wraps the policy service we read network configuration from.
-  PolicyChangeRegistrar policy_change_registrar_;
+  // Wraps the provider we read network configuration from.
+  ConfigurationPolicyObserverRegistrar provider_registrar_;
 
   // Network library to write network configuration to.
   chromeos::NetworkLibrary* network_library_;
 
   // Current settings.
   std::string device_network_config_;
   std::string user_network_config_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkConfigurationUpdater);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_NETWORK_CONFIGURATION_UPDATER_H_