Add missing OWNERs

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/143943006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18758 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

OWNERS

@@ -5,7 +5,9 @@ dslomov@chromium.org
 hpayer@chromium.org
 ishell@chromium.org
 jkummerow@chromium.org
+jochen@chromium.org
 machenbach@chromium.org
+marja@chromium.org
 mstarzinger@chromium.org
 mvstanton@chromium.org
 rossberg@chromium.org