Add jarin to OWNERS file.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/129873023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18761 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

OWNERS

@@ -4,6 +4,7 @@ dcarney@chromium.org
 dslomov@chromium.org
 hpayer@chromium.org
 ishell@chromium.org
+jarin@chromium.org
 jkummerow@chromium.org
 jochen@chromium.org
 machenbach@chromium.org