Add Tobias and Nikita as the owners

Test: n/a
Change-Id: I7bfa329c4b79b486646fa53e5222440cf47bf37f
diff --git a/OWNERS b/OWNERS
index 963d2c2..d8324fb 100644
--- a/OWNERS
+++ b/OWNERS
@@ -5,3 +5,5 @@
 android-libcore-team+review@google.com
 vichang@google.com
 nfuller@google.com
+nikitai@google.com
+tobiast@google.com