Merge "Set timeout for binding service to avoid thread blocking" into main

import java.util.List;

import java.util.Locale;

import java.util.concurrent.CountDownLatch;

import java.util.concurrent.TimeUnit;

import java.util.concurrent.atomic.AtomicReference;

import javax.security.auth.x500.X500Principal;

     */

    public static final int KEY_ATTESTATION_FAILURE = 4;

    private static final int BIND_KEY_CHAIN_SERVICE_TIMEOUT_MS = 30 * 1000;

    /**

     * Used by DPC or delegated app in

     * {@link android.app.admin.DeviceAdminReceiver#onChoosePrivateKeyAlias} or

            context.unbindService(keyChainServiceConnection);

            throw new AssertionError("could not bind to KeyChainService");

        }

        countDownLatch.await();

        if (!countDownLatch.await(BIND_KEY_CHAIN_SERVICE_TIMEOUT_MS, TimeUnit.MILLISECONDS)) {

            context.unbindService(keyChainServiceConnection);

            throw new AssertionError("binding to KeyChainService timeout");

        }

        IKeyChainService service = keyChainService.get();

        if (service != null) {

            return new KeyChainConnection(context, keyChainServiceConnection, service);