Add Non-SFI test for a NaCl packaged app.

There is currently no test for packaged apps for NaCl plugins running in
Non-SFI mode. This change increases test coverage.

BUG=none
TEST=Manually tested in a 32-bit chroot
CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_rel_precise32

Committed: https://crrev.com/e5d4e9e0b73e29030945726b3b44eda22e89d3ec
Cr-Commit-Position: refs/heads/master@{#303997}

Review URL: https://codereview.chromium.org/723623002

Cr-Commit-Position: refs/heads/master@{#304084}
2 files changed