Updates OWNERS files

Bug: 186864416
Test: Builds
Change-Id: I04dfc5c2c7143825334ebc62742e335b8c889492
diff --git a/tools/aapt2/OWNERS b/tools/aapt2/OWNERS
index f1903a5..69dfcc9 100644
--- a/tools/aapt2/OWNERS
+++ b/tools/aapt2/OWNERS
@@ -1,3 +1,4 @@
 set noparent
 toddke@google.com
-rtmitchell@google.com
\ No newline at end of file
+rtmitchell@google.com
+patb@google.com
\ No newline at end of file