GitLab

Added the skeleton trigger class, defined the associated ReportType
and ThreatType enums, and plugged the class into TriggerCreator.

This CL is a no-op. The trigger requires quota in order to be instantiated
and the default quota is 0, so it does not get created at the moment.

Bug: 817377
Change-Id: Ied66b2ecf9dc4eaf59b1d3e87d761996eb8a9d85
Reviewed-on: https://chromium-review.googlesource.com/941362Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
Reviewed-by: Jialiu Lin <jialiul@chromium.org>
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Luke Z <lpz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541786}