OWNERS: add cbrubaker

He's already listed as an authorized +2er in
https://android-review.googlesource.com/admin/groups/810,members

Test: none
Change-Id: Ifff6b3f8353d562b3386d0c2e3b575154f173e23
diff --git a/OWNERS b/OWNERS
index 4b9cbf3..5a25bcc 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,5 +1,6 @@
 alanstokes@google.com
 bowgotsai@google.com
+cbrubaker@google.com
 jbires@google.com
 jeffv@google.com
 jgalenson@google.com