Add more OWNERS

Change-Id: I6407344601d260d1a4fefcfe7324ab7928267da1
diff --git a/OWNERS b/OWNERS
index 5859d10..efbb786 100644
--- a/OWNERS
+++ b/OWNERS
@@ -7,3 +7,6 @@
 rogerliao@google.com
 cyuanjen@google.com
 robinpeng@google.com
+achant@google.com
+etam@google.com
+pattjin@google.com
\ No newline at end of file