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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Each window object has a unique performance object</title>
<link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
<link rel="help" href="http://www.w3.org/TR/navigation-timing/#sec-window.performance-attribute" />
<meta name="assert" content="Each browsing context must have a unique window.performance.timing attribute."/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/performance-timeline-utils.js"></script>
<script src="resources/webperftestharness.js"></script>
</head>
<body>
<h1>Description</h1>
<p>This test validates that each window has a unique window.performance object.</p>
<iframe id="frameContext" src="resources/blank_page_green.html" style="display:none;";></iframe>
<div id="log"></div>
<script>
test_namespace('timing');
if (performanceNamespace !== undefined)
{
test_not_equals(performanceNamespace.timing,
document.getElementById("frameContext").contentWindow.performance.timing,
"Different window objects have unique performance objects");
}
</script>
</body>
</html>
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