minijail: Read all cmdline options before setting up seccomp filters.

BUG=chromium:396832
TEST=security_Minijail_seccomp on daisy_spring.

Change-Id: Ic310059a4fd000fd5132ad9b1e864ab35db891a3
Reviewed-on: https://chromium-review.googlesource.com/209680
Tested-by: Jorge Lucangeli Obes <[email protected]>
Reviewed-by: Nam Nguyen <[email protected]>
Commit-Queue: Jorge Lucangeli Obes <[email protected]>
1 file changed