Add Component: Internals>Network>Certificate

See https://tinyurl.com/yxau5sc4 for context.

Bug: 977050
Change-Id: Ief888af8c4fb5f6f9aa97cdf0dcd051733bf8e59
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1815990
Auto-Submit: Eric Foo <efoo@chromium.org>
Reviewed-by: Ryan Sleevi <rsleevi@chromium.org>
Commit-Queue: Ryan Sleevi <rsleevi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#698585}

third_party/google_trust_services/OWNERS

 asymmetric@chromium.org
 awhalley@chromium.org
 rsleevi@chromium.org
+
+# COMPONENT: Internals>Network>Certificate