Proper management for policy-configured networks.

chrome/browser/policy/network_configuration_updater.h

 // Copyright (c) 2011 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>
 
@@ skipping 13 matching lines @@
 class NetworkConfigurationUpdater
     : public ConfigurationPolicyProvider::Observer {
  public:
   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(const PolicyMap& policy_map,
                                  ConfigurationPolicyType policy_type,
                                  chromeos::NetworkUIData::ONCSource onc_source,
                                  std::string* cached_value);
 
   // 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_