Address TODOs in WifiNoInternetDialog.

import com.android.internal.app.AlertController;

import com.android.settings.R;

import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;

public final class WifiNoInternetDialog extends AlertActivity implements

        DialogInterface.OnClickListener {

    private static final String TAG = "WifiNoInternetDialog";

        // TODO: add a registerNetworkCallback(Network network, NetworkCallback networkCallback) and

        // simplify this.

        final NetworkRequest.Builder builder = new NetworkRequest.Builder();

        for (int i = 0; i < 256; i++) {

            try {

                builder.removeCapability(i);

            } catch (IllegalArgumentException e) {}

        }

        final NetworkRequest request = builder.build();

        final NetworkRequest request = new NetworkRequest.Builder().clearCapabilities().build();

        mNetworkCallback = new NetworkCallback() {

            @Override

            public void onLost(Network network) {

                // Close the dialog if the network disconnects.

                if (mNetwork.equals(network)) {

                    finish();

                }

            }

            // TODO: implement onNetworkCapabilitiesChanged so we can close the dialog if the

            // network is now validated.

            @Override

            public void onCapabilitiesChanged(Network network, NetworkCapabilities nc) {

                // Close the dialog if the network validates.

                if (mNetwork.equals(network) && nc.hasCapability(NET_CAPABILITY_VALIDATED)) {

                    Log.d(TAG, "Network " + mNetwork + " validated");

                    finish();

                }

            }

        };

        mCM = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);