Add default active developers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: I83d1ac4790d88d4c8bfd0136bb682345fa640af0
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..bb04069
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,7 @@
+# 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.
+johnylin@google.com
+hiroh@google.com
+johnylin@google.com
+lajos@google.com