diff -r 000000000000 -r 6474c204b198 browser/metro/base/tests/mochiperf/browser_layers_01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/metro/base/tests/mochiperf/browser_layers_01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+function test() {
+  runTests();
+}
+
+gTests.push({
+  desc: "rotating divs",
+  run: function run() {
+    yield addTab(chromeRoot + "res/divs_test.html", true);
+    yield hideContextUI();
+    yield hideNavBar();
+
+    let stopwatch = new StopWatch();
+    let win = Browser.selectedTab.browser.contentWindow;
+    let domUtils = win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
+    yield waitForEvent(win, "teststarted", 5000);
+    // the test runs for five seconds
+    let recordingHandle = domUtils.startFrameTimeRecording();
+    stopwatch.start();
+    let event = yield waitForEvent(win, "testfinished", 10000);
+    let intervals = domUtils.stopFrameTimeRecording(recordingHandle);
+    let msec = stopwatch.stop();
+
+    PerfTest.declareTest("B924F3FA-4CB5-4453-B131-53E3611E0765",
+                         "rotating divs w/text", "graphics", "content",
+                         "Measures animation frames for rotating translucent divs on top of a background of text.");
+    PerfTest.declareFrameRateResult(intervals.length, msec, "fps");
+  }
+});
+
+