The Tor Browser / file revision

 <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/"

                        xmlns:moz="http://www.mozilla.org/2006/browser/search/">

   <ShortName>Foo</ShortName>

   <Description>Foo Search</Description>

   <InputEncoding>utf-8</InputEncoding>

   <Image width="16" height="16">data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAABGklEQVQoz2NgGB6AnZ1dUlJSXl4eSDIyMhLW4Ovr%2B%2Fr168uXL69Zs4YoG%2BLi4i5dusTExMTGxsbNzd3f37937976%2BnpmZmagbHR09J49e5YvX66kpATVEBYW9ubNm2nTphkbG7e2tp44cQLIuHfvXm5urpaWFlDKysqqu7v73LlzECMYIiIiHj58mJCQoKKicvXq1bS0NKBgW1vbjh074uPjgeqAXE1NzSdPnvDz84M0AEUvXLgAsW379u1z5swBen3jxo2zZ892cHB4%2BvQp0KlAfwI1cHJyghQFBwfv2rULokFXV%2FfixYu7d%2B8GGqGgoMDKyrpu3br9%2B%2FcDuXl5eVA%2FAEWBfoWHAdAYoNuAYQ0XAeoUERFhGDYAAPoUaT2dfWJuAAAAAElFTkSuQmCC</Image>

   <Url type="text/html" method="GET" template="http://mochi.test:8888/browser/browser/components/search/test/?search">

     <Param name="test" value="{searchTerms}"/>

   </Url>

   <moz:SearchForm>http://mochi.test:8888/browser/browser/components/search/test/</moz:SearchForm>

   <moz:Alias>fooalias</moz:Alias>

 </OpenSearchDescription>