chromium/components/test/data/search_engines/unicode_open_search.xml

<?xml version="1.0"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
<ShortName>тест</ShortName>
<Description>Unicode ShortName</Description>
<Url type="text/html" template="http://test/{searchTerms}"/>
</OpenSearchDescription>