dbus/org.chromium.PermissionBroker.conf

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
  <policy context="default">
    <allow send_destination="org.chromium.PermissionBroker" />
  </policy>

  <policy user="devbroker">
    <allow own="org.chromium.PermissionBroker" />
  </policy>

  <limit name="max_replies_per_connection">512</limit>
</busconfig>