src/third_party/web_platform_tests/FileAPI/blob/Blob-XHR-revoke.html - cobalt - Git at Google

 <!doctype html>
 <title>Revoking blob URL used with XMLHttpRequest</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>

 <script>
 async_test(function(t) {
     var blob = new Blob(["test"]);
     var url = URL.createObjectURL(blob);
     var xhr = new XMLHttpRequest();
     xhr.open("GET", url);

     // Revoke the object URL.  XHR should take a reference to the blob as soon as
     // it receives it in open(), so the request succeeds even though we revoke the
     // URL before calling send().
     URL.revokeObjectURL(url);

     xhr.send();

     xhr.onload = t.step_func(function() {
         assert_equals(xhr.response, "test");
         t.done();
     })
     xhr.onerror = t.step_func(function() {
         assert_unreached("Got unexpected error event");
     })
 });
 </script>
	<!doctype html>
	<title>Revoking blob URL used with XMLHttpRequest</title>
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>

	<script>
	async_test(function(t) {
	var blob = new Blob(["test"]);
	var url = URL.createObjectURL(blob);
	var xhr = new XMLHttpRequest();
	xhr.open("GET", url);

	// Revoke the object URL. XHR should take a reference to the blob as soon as
	// it receives it in open(), so the request succeeds even though we revoke the
	// URL before calling send().
	URL.revokeObjectURL(url);

	xhr.send();

	xhr.onload = t.step_func(function() {
	assert_equals(xhr.response, "test");
	t.done();
	})
	xhr.onerror = t.step_func(function() {
	assert_unreached("Got unexpected error event");
	})
	});
	</script>