Swap Codegen OWNER

Change-Id: I4b691e2df7b7f50b81302e341b993e9890a61e9c
diff --git a/tools/codegen/OWNERS b/tools/codegen/OWNERS
index da723b3..c9bd260 100644
--- a/tools/codegen/OWNERS
+++ b/tools/codegen/OWNERS
@@ -1 +1 @@
-eugenesusla@google.com
\ No newline at end of file
+chiuwinson@google.com