Add check for BRANCH= tag on project specific repos

BUG=none
TEST="Test that a upload in the projects specified by this CL
      require a BRANCH= line in the commit message;

      Also test that the check is ignored if the PRESUBMIT.cfg file
      has a branch_check: false"

Change-Id: Ia6315145e24ae7f4dcc26a40ebcef9224d4bdba5
Reviewed-on: https://gerrit.chromium.org/gerrit/30127
Reviewed-by: David James <davidjames@chromium.org>
Commit-Ready: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Ready: Puneet Kumar <puneetster@chromium.org>
Tested-by: Puneet Kumar <puneetster@chromium.org>
1 file changed