Add Patti to chrome://media-app OWNERS.

Change-Id: I12f5c4bf407cc397803c31fdcf50d28ef606ee10
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2497940
Auto-Submit: David Lei <dlei@google.com>
Commit-Queue: Patti <patricialor@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Patti <patricialor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820969}

chromeos/components/media_app_ui/OWNERS

 tapted@chromium.org
 dstockwell@chromium.org
 bugsnash@chromium.org
+patricialor@chromium.org
 
 per-file *.mojom=set noparent
 per-file *.mojom=file://ipc/SECURITY_OWNERS