Add default code reviewers in surfacereplayer

Bug: None
Test: uploader
Change-Id: I8142b9e1f2c9854c4562fce8057cec4a54608461
diff --git a/cmds/surfacereplayer/OWNERS b/cmds/surfacereplayer/OWNERS
new file mode 100644
index 0000000..cc4c842
--- /dev/null
+++ b/cmds/surfacereplayer/OWNERS
@@ -0,0 +1,2 @@
+mathias@google.com
+racarr@google.com