GitLab

No shadowing was enabled for base code but not the unittests. Add the
config to the unittest component as well and fix issues.

BUG=794619

Change-Id: Ia23a007d8fc66d4ad6a2f1682d09b31894caae81
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1776791Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Will Harris <wfh@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693133}