Add hdmoon@/insun@ to OWNERS

Test: N/A
Change-Id: I53a29c098f3b201049baa39ea187cd2f9b5ef167
diff --git a/media/OWNERS b/media/OWNERS
index eb26367..72c8952 100644
--- a/media/OWNERS
+++ b/media/OWNERS
@@ -3,7 +3,9 @@
 elaurent@google.com
 etalvala@google.com
 gkasten@google.com
+hdmoon@google.com
 hunga@google.com
+insun@google.com
 jaewan@google.com
 jmtrivi@google.com
 jsharkey@android.com