third_party/blink/web_tests/paint/invalidation/selection/selection-and-text-repaint.html - chromium/src.git - Git at Google

 <!DOCTYPE html>
 <style>
     ::selection { color: red }
     .green { color: green }
 </style>
 <p id="t1">This text should be green.</p>
 <script>
     if (window.testRunner)
         testRunner.waitUntilDone();

     requestAnimationFrame(() => {
         t1.className = "green";
         if (window.testRunner)
             testRunner.notifyDone();
     });
 </script>
	<!DOCTYPE html>
	<style>
	::selection { color: red }
	.green { color: green }
	</style>
	<p id="t1">This text should be green.</p>
	<script>
	if (window.testRunner)
	testRunner.waitUntilDone();

	requestAnimationFrame(() => {
	t1.className = "green";
	if (window.testRunner)
	testRunner.notifyDone();
	});
	</script>