Allow programmatic blacklisting of unit tests.

BUG=chromium:236158
TEST=Remote trybot run of pre-cq-group.
Change-Id: I8eb4107a361ff9f4b75db4cfe961220d09a71364
Reviewed-on: https://gerrit.chromium.org/gerrit/49440
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: David James <davidjames@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
1 file changed