Add Team and COMPONENT to feed's OWNERS

Change-Id: Id4f175a316925cdac169cb67622dae3f172fec44
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1539868
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644666}

chrome/android/feed/OWNERS

 fgorski@chromium.org
 skym@chromium.org
 twellington@chromium.org
+
+# Team: chrome-jardin-team@google.com
+# COMPONENT: UI>Browser>ContentSuggestions>Feed