import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/xslt/tests/mochitest/test_bug1135764.html

@@ -0,0 +1,53 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1135764
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 1135764</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 1135764 **/
+  SimpleTest.waitForExplicitFinish();
+  var counter = 0;
+  var startTimelineValue;
+
+  function waitATick() {
+    ++counter;
+    if (counter == 1) {
+      frames[0].requestAnimationFrame(waitATick);
+      return;
+    }
+    ok(frames[0].document.timeline.currentTime !== startTimelineValue,
+       "The timeline in an XSLT-transformed document should still advance");
+    SimpleTest.finish();
+  }
+  addLoadEvent(function() {
+    SpecialPowers.pushPrefEnv(
+      { "set": [[ "dom.animations-api.core.enabled", true]] },
+      function() {
+        var ifr = document.querySelector("iframe");
+        ifr.onload = function() {
+          startTimelineValue = frames[0].document.timeline.currentTime;
+          frames[0].requestAnimationFrame(waitATick);
+        }
+        ifr.src = "file_bug1135764.xml";
+     })
+  })
+  </script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1135764">Mozilla Bug 1135764</a>
+<p id="display">
+  <iframe></iframe>
+</p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>