Clients with Firefox.xml

<?xml version="1.0" encoding="UTF-8"?>
<computer_group>
  <name>Clients with Firefox</name>
  <is_smart>true</is_smart>
  <site>
    <id>-1</id>
    <name>None</name>
  </site>
  <criteria>
    <size>1</size>
    <criterion>
      <name>Application Title</name>
      <priority>0</priority>
      <and_or>and</and_or>
      <search_type>is</search_type>
      <value>Firefox.app</value>
      <opening_paren>false</opening_paren>
      <closing_paren>false</closing_paren>
    </criterion>
  </criteria>
</computer_group>