Add default active developers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: I9a06b9b3462bba3e6f4c9a19009cde735e2a8023
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..21a2ebd
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,6 @@
+# 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.
+tfiala@google.com
+cco3@android.com
+djm@google.com