Add sarahchin to OWNERS

Test: no test
Change-Id: I8d60bd59afb3f3e0aa68258f5de417e120663f4e
diff --git a/OWNERS b/OWNERS
index 284f0ec..8f494b2 100644
--- a/OWNERS
+++ b/OWNERS
@@ -11,3 +11,4 @@
 refuhoo@google.com
 paulye@google.com
 nazaninb@google.com
+sarahchin@google.com
\ No newline at end of file