Subzero: adding jpp@chromium.org to OWNERS.

BUG= None
R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/1149213006
diff --git a/OWNERS b/OWNERS
index e114c22..3964d48 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,6 +1,7 @@
 dschuff@chromium.org
 eliben@chromium.org
 jfb@chromium.org
+jpp@chromium.org
 jvoung@chromium.org
 kschimpf@google.com
 mseaborn@chromium.org