This is a follow-up to https://chromium-review.googlesource.com/c/419148/;
the purpose is to confirm that the behavior is how we want it to be when
there are presubmit errors and warnings.

BUG=671683

Change-Id: I5b295c200d3db1a374e4294bdd78a777ae36c832
Reviewed-on: https://chromium-review.googlesource.com/420975
Commit-Queue: Quinten Yearsley <qyearsley@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>