GitLab

Adds a simple Media Feeds service and feature
flag so we can start working on the feature.

BUG=1056766

Change-Id: I74fe15de8ea6e3ee1c73dbb1ebe467ae9f195144
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2079265Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Tommi <tommi@chromium.org>
Reviewed-by: Tommy Steimel <steimel@chromium.org>
Commit-Queue: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746034}