Use networkingPrivate.startConnect (Take 2)

chromeos/network/network_state.h

Index: chromeos/network/network_state.h
diff --git a/chromeos/network/network_state.h b/chromeos/network/network_state.h
index e4d9cce2cc090a730d8431e11f259c54abfcb0c5..518e56845c12c350d9971dd186689dfe2aa7eea3 100644
--- a/chromeos/network/network_state.h
+++ b/chromeos/network/network_state.h
@@ -126,6 +126,9 @@ class CHROMEOS_EXPORT NetworkState : public ManagedState {
   // Set the GUID. Called exclusively by NetworkStateHandler.
   void SetGuid(const std::string& guid);
 
+  // Returns |error_| if valid, otherwise returns |last_error_|.
+  std::string GetErrorState() const;
+
   // Helpers (used e.g. when a state, error, or shill dictionary is cached)
   static bool StateIsConnected(const std::string& connection_state);
   static bool StateIsConnecting(const std::string& connection_state);