Integrate BPF seccomp_filters to Minijail.

BUG=chromium-os:25429
BUG=chromium-os:27878
TEST=security_Minijail_seccomp
CQ-DEPEND=I13a9b22ac8d55f02d5a77b5beedb955386b63723

Change-Id: I5fa8f40b9a539a61d69439cad778c926fc934cb1
Reviewed-on: https://gerrit.chromium.org/gerrit/19527
Tested-by: Jorge Lucangeli Obes <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Commit-Ready: Jorge Lucangeli Obes <[email protected]>
6 files changed