Make vpn destroyConfig generate disconnect message for connected configuration

extensions/browser/api/vpn_provider/vpn_service.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_API_VPN_PROVIDER_VPN_SERVICE_H_
 #define EXTENSIONS_BROWSER_API_VPN_PROVIDER_VPN_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 72 matching lines @@
                                      const std::string& profile_path,
                                      Source source) override;
 
   // NetworkStateHandlerObserver:
   void NetworkListChanged() override;
 
   // ExtensionRegistryObserver:
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const extensions::Extension* extension,
                               extensions::UninstallReason reason) override;
+  void OnExtensionUnloaded(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      extensions::UnloadedExtensionInfo::Reason reason) override;
 
   // Creates a new VPN configuration with |configuration_name| as the name and
   // attaches it to the extension with id |extension_id|.
   // Calls |success| or |failure| based on the outcome.
   void CreateConfiguration(const std::string& extension_id,
                            const std::string& extension_name,
                            const std::string& configuration_name,
                            const SuccessCallback& success,
                            const FailureCallback& failure);
 
@@ skipping 106 matching lines @@
   StringToConfigurationMap service_path_to_configuration_map_;
 
   base::WeakPtrFactory<VpnService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VpnService);
 };
 
 }  // namespace chromeos
 
 #endif  // EXTENSIONS_BROWSER_API_VPN_PROVIDER_VPN_SERVICE_H_