GitLab

The CSS scanning optimization has been removed, so these metrics
aren't being recorded anymore.

Bug: None
Change-Id: I4f10216e45962c4c75c440518a1f13721e684361
Reviewed-on: https://chromium-review.googlesource.com/1222626Reviewed-by: Bryan McQuade <bmcquade@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591393}