chromium/src/third_party/blink/web_tests/fast/frames/frame-resize-repaint-contents.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <script src="../../resources/run-after-layout-and-paint.js"></script>
 <script>
 onload = function() {
   runAfterLayoutAndPaint(function() {
     document.getElementById('iframe').style.width = '150px';
   }, true);
 };
 </script>
 <iframe id="iframe"
     srcdoc="<div style='width:50px; height:50px; background-color:blue; float:right'></div>"
     style="width: 100px; height: 100px">
 </iframe>
	<!DOCTYPE html>
	<script src="../../resources/run-after-layout-and-paint.js"></script>
	<script>
	onload = function() {
	runAfterLayoutAndPaint(function() {
	document.getElementById('iframe').style.width = '150px';
	}, true);
	};
	</script>
	<iframe id="iframe"
	srcdoc="<div style='width:50px; height:50px; background-color:blue; float:right'></div>"
	style="width: 100px; height: 100px">
	</iframe>