Allow branch to get either native_client (as on the buildbots) or '' as on the trybots. Without this, not all the test are being run on the trybots.
Allow branch to get either native_client (as on the buildbots)
or '' as on the trybots.
Without this, not all the test are being run on the trybots.

BUG=None
TEST=None
R=mcgrathr@google.com
Review URL: http://codereview.chromium.org/7565022

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@6313 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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