Add default active developers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: I5332998f1d92ddc45f76b976a33839df5d36381a
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..02918bf
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,8 @@
+# Default owners are top 3 active developers of the past 1 or 2 years
+# or people with more than 10 commits last year.
+# Please update this list if you find better owner candidates.
+deymo@google.com
+dwillemsen@google.com
+hhb@google.com
+zhangjerry@google.com
+jiyong@google.com