chromium/ios/testing/data/http_server_files/opensearch.xml

<?xml version="1.0"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">
    <ShortName>Chrooome</ShortName>
    <Description>Chrooome</Description>
    <Image height="16" width="16" type="image/x-icon">https://chromium.test/favicon.ico</Image>
    <Url type="text/html" method="get" template="https://chromium.test/index.php?title=chrooome&amp;search={searchTerms}" />
</OpenSearchDescription>