Turn off gerrit emails.

testing_support/gerrit-init.sh

 #!/bin/bash
 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 set -e
 
 http_port=8080
 ssh_port=29418
 
@@ skipping 124 matching lines @@
   fi
 done
 
 if [ ! -e "$gerrit_exe" ]; then
   echo "ERROR: No $gerrit_exe file or link present, and unable " 1>&2
   echo "       to download the latest version." 1>&2
   exit 1
 fi
 
 # By default, gerrit only accepts https connections, which is a good thing.  But
-# for testing, it's convenient to enable plain http.
+# for testing, it's convenient to enable plain http.  Also, turn off all email
+# notifications.
 mkdir -p "${rundir}/etc"
 cat <<EOF > "${rundir}/etc/gerrit.config"
 [auth]
         type = http
         gitBasicAuth = true
 [gerrit]
         canonicalWebUrl = http://$(hostname):${http_port}/
 [httpd]
         listenUrl = http://*:${http_port}/
 [sshd]
         listenAddress = *:${ssh_port}
+[sendemail]
+        enable = false
 EOF
 
 # Initialize the gerrit instance.
 java -jar "$gerrit_exe" init --no-auto-start --batch -d "${rundir}"
 
 # Create SSH key pair for the first user.
 mkdir -p "${rundir}/tmp"
 ssh-keygen -t rsa -q -f "${rundir}/tmp/id_rsa" -N ""
 ssh_public_key="$(cat ${rundir}/tmp/id_rsa.pub)"
 
@@ skipping 28 matching lines @@
 To use SSH API:
   ssh ${username}@localhost -p ${ssh_port} -i ${rundir}/tmp/id_rsa gerrit
 
 To enable 'git push' without a password prompt:
   git config credential.helper 'store --file=${rundir}/tmp/.git-credentials'
 
 To stop the server:
   ${rundir}/bin/gerrit.sh stop
 
 EOF