Add 'no-missing-error' switch to network traffic annotation auditor.

An optional 'no-missing-error' switch is added to Network Traffic
Annotation Auditor.
If provided, auditor would not issue error in cases that an annotation
is missing. This would be useful on platforms that still do not fully
cover annotations and auditor is just run to check existing ones.

Bug: 690323
Change-Id: I5b74d5c86b12c1a85fdeaba7bc71381c6b6451dc
Reviewed-on: https://chromium-review.googlesource.com/930761
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Martin Šrámek <msramek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539715}
1 file changed