tree 67c8aaa3f25e7662f165c9bedd4cb85934817882
parent bc5030df864b5b2ba94c6dbfddda851440a617d4
author Yingdi Yu <yuyingdi@gmail.com> 1409440437 -0700
committer Yingdi Yu <yuyingdi@gmail.com> 1409778052 -0700

util: Add toString and operator<< for util::Digest

Change-Id: Id3695ad1d66dcc93f08085ee42556c71e3eb419c