Merge "Ensure user is unlocked before binding to KeyChain service"

import android.os.Process;

import android.os.RemoteException;

import android.os.UserHandle;

import android.os.UserManager;

import android.security.keystore.AndroidKeyStoreProvider;

import android.security.keystore.KeyPermanentlyInvalidatedException;

import android.security.keystore.KeyProperties;

            throw new NullPointerException("context == null");

        }

        ensureNotOnMainThread(context);

        if (!UserManager.get(context).isUserUnlocked(user)) {

            throw new IllegalStateException("User must be unlocked");

        }

        final CountDownLatch countDownLatch = new CountDownLatch(1);

        final AtomicReference<IKeyChainService> keyChainService = new AtomicReference<>();

        ServiceConnection keyChainServiceConnection = new ServiceConnection() {