Add chili and jianli as owners to neterror page files.

Change-Id: I8086423200b43d771ad800c84ef8c1795ef18b56
Reviewed-on: https://chromium-review.googlesource.com/1168285
Commit-Queue: Cathy Li <chili@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Reviewed-by: Jian Li <jianli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581906}

chrome/renderer/net/OWNERS

-# Preferred reviewer.
+# Preferred net owner.
 mmenke@chromium.org
 
+# Offline owners.
+chili@chromium.org
+jianli@chromium.org
+
 file://net/OWNERS
 
 # COMPONENT: Internals>Network

components/neterror/OWNERS

 mmenke@chromium.org
 edwardjung@chromium.org
 
+# Offline owners.
+chili@chromium.org
+jianli@chromium.org
+
 # COMPONENT: Internals>Network