LayoutTests/compositing/layer-creation/fixed-position-out-of-view-scaled-iframe.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <script>
   if (window.testRunner) {
     testRunner.dumpAsText();
     testRunner.waitUntilDone();
   }
   if (window.internals) {
     window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true);

     addEventListener("load", function() {
       window.internals.setPageScaleFactor(0.5, 0, 0);
       setTimeout(function() {
         var layerTreeScaledDown = internals.layerTreeAsText(document.getElementById("iframe").contentDocument);

         window.internals.setPageScaleFactor(1.5, 0, 0);
         setTimeout(function() {
           var layerTreeScaledUp = internals.layerTreeAsText(document.getElementById("iframe").contentDocument);
           // Because logical size of the frame is unchanged, the layer tree in the frame should not be affected by the page scale.
           document.getElementById("result").innerText =
               layerTreeScaledUp == layerTreeScaledDown ? "PASS" : "FAIL";
           testRunner.notifyDone();
         }, 0);
       }, 0);
     }, false);
   }
 </script>
 </head>
 <body>
 <iframe id="iframe" src="resources/fixed-position-out-of-view-frame.html" style="width: 800px; height: 600px"></iframe>
 <pre id="result"></pre>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<script>
	if (window.testRunner) {
	testRunner.dumpAsText();
	testRunner.waitUntilDone();
	}
	if (window.internals) {
	window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true);

	addEventListener("load", function() {
	window.internals.setPageScaleFactor(0.5, 0, 0);
	setTimeout(function() {
	var layerTreeScaledDown = internals.layerTreeAsText(document.getElementById("iframe").contentDocument);

	window.internals.setPageScaleFactor(1.5, 0, 0);
	setTimeout(function() {
	var layerTreeScaledUp = internals.layerTreeAsText(document.getElementById("iframe").contentDocument);
	// Because logical size of the frame is unchanged, the layer tree in the frame should not be affected by the page scale.
	document.getElementById("result").innerText =
	layerTreeScaledUp == layerTreeScaledDown ? "PASS" : "FAIL";
	testRunner.notifyDone();
	}, 0);
	}, 0);
	}, false);
	}
	</script>
	</head>
	<body>
	<iframe id="iframe" src="resources/fixed-position-out-of-view-frame.html" style="width: 800px; height: 600px"></iframe>
	<pre id="result"></pre>
	</body>
	</html>