chrome 版本升级到56，报错Your connection is not private NET::ERR_CERT_WEAK_SIGNATURE_ALGORITHM

ubuntu14.04 解决方法： 

$ sudo apt-get install libnss3-1d 

ref： http://stackoverflow.com/questions/42085055/neterr-cert-weak-signature-algorithm-error-for-google-chrome-stable-version-on