Merge "Block CE SharedPreferences access before unlocked."

import android.os.ServiceManager;

import android.os.Trace;

import android.os.UserHandle;

import android.os.UserManager;

import android.os.storage.IStorageManager;

import android.system.ErrnoException;

import android.system.Os;

    @Override

    public SharedPreferences getSharedPreferences(File file, int mode) {

        checkMode(mode);

        if (getApplicationInfo().targetSdkVersion >= android.os.Build.VERSION_CODES.O) {

            if (isCredentialProtectedStorage()

                    && !getSystemService(UserManager.class).isUserUnlocked()) {

                throw new IllegalStateException("SharedPreferences in credential encrypted "

                        + "storage are not available until after user is unlocked");

            }

        }

        SharedPreferencesImpl sp;

        synchronized (ContextImpl.class) {

            final ArrayMap<File, SharedPreferencesImpl> cache = getSharedPreferencesCacheLocked();