Enable Chrome 'quick-search' for SharePoint Intranets

masterfile-snippet.html

<!--
  add inside the 'head' element of master page.
  replace title="Intranet" with the name of your intranet (if branded) 
-->
<link rel="search" title="Intranet" type="application/opensearchdescription+xml" href="/Style%20Library/opensearch.xml" />

opensearch.xml

<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
    <!--under 16 chars. no spaces--> 
    <ShortName>Intranet</ShortName>
    <!--under 48 chars--> 
    <Description>Search your Intranet</Description>
    <Tags>Intranet</Tags>
    <Query role="example" searchTerms="test"/>
    <!-- UPDATE THIS URL - SP Standard/Enterprise: use search center results URL - make sure that ampersands are encoded -->
    <Url type="text/html" method="get" rel="results" template="http://INTRANETURL/_layouts/OSSSearchResults.aspx?k={searchTerms}&amp;s=All%20Sites"/>
</OpenSearchDescription>