third_party/blink/web_tests/paint/invalidation/iframe-display-none-to-display-block.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <script src="resources/text-based-repaint.js"></script>
 <script>
 function repaintTest()
 {
     document.getElementById("iframe").style.display = "block";
 }
 window.addEventListener("load", runRepaintAndPixelTest);
 </script>
 <p><a href="https://code.google.com/p/chromium/issues/detail?id=650433">issue 650433</a>:
     display:none iframes do not have layout objects<br>
     The test checks that changing the style of an iframe from none to block
     creates the right sequence of paint invalidations.
 </p>
 <iframe id="iframe" width="728" height="90" style="display: none"></iframe>
	<!DOCTYPE html>
	<script src="resources/text-based-repaint.js"></script>
	<script>
	function repaintTest()
	{
	document.getElementById("iframe").style.display = "block";
	}
	window.addEventListener("load", runRepaintAndPixelTest);
	</script>
	<p><a href="https://code.google.com/p/chromium/issues/detail?id=650433">issue 650433</a>:
	display:none iframes do not have layout objects<br>
	The test checks that changing the style of an iframe from none to block
	creates the right sequence of paint invalidations.
	</p>
	<iframe id="iframe" width="728" height="90" style="display: none"></iframe>