Moving implementation of security warnings from pippki to pipboot.
r=javi sr=rpotts
git-svn-id: svn://10.0.0.236/trunk@130300 18797224-902f-48f8-a5cc-f745e15eee43
b=10977 Make sure certificate downloading works immediately r=javi sr=mscott
(checking in for kaie)
git-svn-id: svn://10.0.0.236/trunk@109265 18797224-902f-48f8-a5cc-f745e15eee43