Add OWNERS in external/abi-dumper
am: 9b76336c02

Change-Id: I84db6a32a096c920824b05c0026a8b4d3a7db218
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..457db7c
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+jchowdhary@google.com