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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>