Enable failures when compilation fails on buildbot.
Enable failures when compilation fails on buildbot.

Tests still don't pass, but looks like compilation succeeds so
we may enable these checks.
Review URL: http://codereview.chromium.org/6735021

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@4743 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client