Destroy configurations created by VPN extension on disable

extensions/browser/api/vpn_provider/vpn_service.h

Index: extensions/browser/api/vpn_provider/vpn_service.h
diff --git a/extensions/browser/api/vpn_provider/vpn_service.h b/extensions/browser/api/vpn_provider/vpn_service.h
index 25e93172aa837de0265630cd8c189e3e66da86d6..72c62406daceabee75df8c945129fc63b254bc57 100644
--- a/extensions/browser/api/vpn_provider/vpn_service.h
+++ b/extensions/browser/api/vpn_provider/vpn_service.h
@@ -215,6 +215,10 @@ class VpnService : public KeyedService,
                              const std::string& event_name,
                              scoped_ptr<base::ListValue> event_args);
 
+  // Destroy configurations belonging to the extension.
+  void DestroyConfigurationsForExtension(
+      const extensions::Extension* extension);
+
   // Set the active configuration.
   void SetActiveConfiguration(VpnConfiguration* configuration);