Revert of Use networkingPrivate.startConnect

chromeos/network/network_state_handler.h

Index: chromeos/network/network_state_handler.h
diff --git a/chromeos/network/network_state_handler.h b/chromeos/network/network_state_handler.h
index f032f77c96c418fc8591484ad443f20b232fe3cd..135d225737a0a0544fd6d84e275f4fd43a0af4a2 100644
--- a/chromeos/network/network_state_handler.h
+++ b/chromeos/network/network_state_handler.h
@@ -224,10 +224,6 @@
     return default_network_path_;
   }
 
-  // Sets the |last_error_| property of the matching NetworkState for tests.
-  void SetLastErrorForTest(const std::string& service_path,
-                           const std::string& error);
-
   // Constructs and initializes an instance for testing.
   static NetworkStateHandler* InitializeForTest();