chromium/third_party/blink/web_tests/images/viewport-in-standalone-image-document.html

<!DOCTYPE html>
<html>
    <head>
        <script>
            if (window.testRunner) {
                testRunner.dumpAsText();
            }

            function frameLoaded()
            {
                var standaloneImageDocument = document.querySelector("iframe").contentDocument;
                var metaElement = standaloneImageDocument.querySelector("meta");

                if (metaElement && metaElement.name == "viewport" &&
                    metaElement.content == "width=device-width, minimum-scale=0.1") {
                    document.getElementById("log").textContent = "PASS";
                }
            }
        </script>
    </head>
    <body>
        <p>
            This tests that a standalone image document has viewport settings.
        </p>
        <iframe src="resources/gracehopper.jpg" onload="frameLoaded()"></iframe>
	<p id="log">FAIL</p>
    </body>
</html>