Merge "Create Instant App cookie dir if it doesn't exist" into oc-dev am: d2cc513e

        byte[] randomBytes = new byte[8];

        new SecureRandom().nextBytes(randomBytes);

        String id = ByteStringUtils.toHexString(randomBytes).toLowerCase(Locale.US);

        File appDir = getInstantApplicationDir(packageName, userId);

        if (!appDir.exists() && !appDir.mkdirs()) {

            Slog.e(LOG_TAG, "Cannot create instant app cookie directory");

            return id;

        }

        File idFile = new File(getInstantApplicationDir(packageName, userId),

                INSTANT_APP_ANDROID_ID_FILE);

        try (FileOutputStream fos = new FileOutputStream(idFile)) {