third_party/blink/web_tests/shadow-dom/slots-1.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <script src='resources/shadow-dom.js'></script>
 <div id='d1'>
   <template data-mode='open'>
     <div>d1-1</div>
     <slot name='d1-s1'></slot>
     <div>d1-2</div>
   </template>
   <div slot='d1-s1'>d2</div>
 </div>
 <script>
 convertTemplatesToShadowRootsWithin(d1);
 </script>
	<!DOCTYPE html>
	<script src='resources/shadow-dom.js'></script>
	<div id='d1'>
	<template data-mode='open'>
	<div>d1-1</div>
	<slot name='d1-s1'></slot>
	<div>d1-2</div>
	</template>
	<div slot='d1-s1'>d2</div>
	</div>
	<script>
	convertTemplatesToShadowRootsWithin(d1);
	</script>