chromium/third_party/blink/web_tests/ppapi/plugins/multiple-plugins.html

<!DOCTYPE html>
<html>
<head>
<script src="../../resources/js-test.js"></script>
</head>
<body>
<embed id="plug1" type="application/x-blink-deprecated-test-plugin">
<embed id="plug2" type="application/x-blink-deprecated-test-plugin">
<script>
description('Test that we can create two plugins, and independently clean each.');

gc();

var plug1 = document.getElementById("plug1");
var plug2 = document.getElementById("plug2");

testObj1 = plug1.testObject;
testObj2 = plug2.testObject;

// Verify we can access each object.
shouldBeDefined('testObj1.testObject');
shouldBeDefined('testObj2.testObject');

// Now remove the first plugin
plug1.parentNode.removeChild(plug1);

shouldThrow('testObj1.testObject');

shouldBeDefined('testObj2.testObject');

// Now remove the second plugin
plug2.parentNode.removeChild(plug2);

shouldThrow('testObj2.testObject');
</script>
</body>
</html>