Merge "Remove the usage of SystemProperties.set()"

    public void setTcpInitRwnd(int value) {

        NetworkProperties.tcp_init_rwnd(value);

    }

    // TODO(b/33308258): SystemProperties.set() will not be accessible if ConnectivityService

    // becomes a mainline module. Remove it and replace the usage after removing net.dns*.

    public void set(String key, String value) {

        SystemProperties.set(key, value);

    }

}