MediaMetrics: Update to use STL containers

Test: dumpsys media.metrics sanity
Change-Id: Ifcada098e755ef3d679715ed23fab9d793ebde3e
diff --git a/services/mediaanalytics/OWNERS b/services/mediaanalytics/OWNERS
index 9af258b..e37a1f8 100644
--- a/services/mediaanalytics/OWNERS
+++ b/services/mediaanalytics/OWNERS
@@ -1 +1,2 @@
 essick@google.com
+hunga@google.com