[fixes] Refreshes OWNERS and simulate_staging.py

As written, simulate_staging.py didn't work, so I fixed it.

Change-Id: Iac1e3faef194123f3046d9bcfaf7373f41f1285a
diff --git a/OWNERS b/OWNERS
index b84a6f9..9508537 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,5 +1,4 @@
 fmil@google.com
 joshuaseaton@google.com
-kpozin@google.com
-shayba@google.com
-viktard@google.com
+neelsa@google.com
+quiche@google.com
diff --git a/simulate_staging.py b/simulate_staging.py
index dbf4d21..efd38c3 100755
--- a/simulate_staging.py
+++ b/simulate_staging.py
@@ -3,7 +3,15 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-"""Copies files from checkout dir to staging dir based on contents.json."""
+"""Copies files from checkout dir to staging dir based on contents.json.
+
+Invoke from the checkout directory (the directory that contains .jiri_root).
+
+Example:
+   ./fontdata/simulate_staging.py $HOME/tmp/staging-dir
+
+Once done, the directory contains the staged files ready for upload.
+"""
 
 import argparse
 import json
@@ -19,11 +27,13 @@
   parser.add_argument('staging_dir', metavar='staging-dir', type=str)
   parser.add_argument('--checkout-dir', type=str, default='.',
                       help='Path to jiri checkout directory. Defaults to current working directory.')
+  parser.add_argument('--contents-path', type=str, default='fontdata',
+                      help='directory path to contents.json, relative to checkout dir')
   args = parser.parse_args()
 
   staging_dir = Path(args.staging_dir).resolve()
   checkout_dir = Path(args.checkout_dir).resolve()
-  contents_path = checkout_dir.joinpath('contents.json')
+  contents_path = checkout_dir.joinpath(args.contents_path, 'contents.json')
   with open(contents_path, 'r') as file:
     contents = json.load(file)
     for bundle in contents: