chromium/src/third_party/blink/web_tests/svg/custom/shadow-dom-resource-reference.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <div></div>
 <svg height="0">
   <linearGradient id="g">
     <stop stop-color="red"/>
   </linearGradient>
 </svg>
 <script>
 var div = document.querySelector('div');
 var shadowRoot = div.attachShadow({ mode: 'closed' });
 shadowRoot.innerHTML = '<svg><rect width="100" height="100" fill="url(#g) green"/></svg>';
 </script>
	<!DOCTYPE html>
	<div></div>
	<svg height="0">
	<linearGradient id="g">
	<stop stop-color="red"/>
	</linearGradient>
	</svg>
	<script>
	var div = document.querySelector('div');
	var shadowRoot = div.attachShadow({ mode: 'closed' });
	shadowRoot.innerHTML = '<svg><rect width="100" height="100" fill="url(#g) green"/></svg>';
	</script>