diff -r 000000000000 -r 6474c204b198 dom/tests/mochitest/pointerlock/pointerlock_utils.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/tests/mochitest/pointerlock/pointerlock_utils.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,62 @@
+const isWinXP = navigator.userAgent.indexOf("Windows NT 5.1") != -1;
+const isOSXLion = navigator.userAgent.indexOf("Mac OS X 10.7") != -1;
+
+// If we're running in a child window, shim things so it works the same
+// as if we were running stand-alone.
+if (window.opener) {
+  // Get test filename for page being run in popup so errors are more useful
+  var testName = location.pathname.split('/').pop();
+
+  // Wrap test functions and pass to parent window
+  window.ok = function(a, msg) {
+    opener.ok(a, testName + ": " + msg);
+  };
+
+  window.is = function(a, b, msg) {
+    opener.is(a, b, testName + ": " + msg);
+  };
+
+  window.isnot = function(a, b, msg) {
+    opener.isnot(a, b, testName + ": " + msg);
+  };
+
+  window.todo = function(a, msg) {
+    opener.todo(a, testName + ": " + msg);
+  };
+
+  window.todo_is = function(a, b, msg) {
+    opener.todo_is(a, b, testName + ": " + msg);
+  };
+
+  window.todo_isnot = function(a, b, msg) {
+    opener.todo_isnot(a, b, testName + ": " + msg);
+  };
+
+  // Override bits of SimpleTest so test files work stand-alone
+  var SimpleTest = SimpleTest || {};
+
+  SimpleTest.waitForExplicitFinish = function() {
+    dump("[POINTERLOCK] Starting " + testName+ "\n");
+  };
+
+  SimpleTest.finish = function () {
+    dump("[POINTERLOCK] Finishing " + testName+ "\n");
+    opener.nextTest();
+  };
+} else {
+  // If we're not running in a child window, prefs need to get flipped here,
+  // otherwise it was already done in the test runner parent.
+
+  // Ensure the full-screen api is enabled, and will be disabled on test exit.
+  SpecialPowers.setBoolPref("full-screen-api.enabled", true);
+
+  // Disable the requirement for trusted contexts only, so the tests are easier to write.
+  SpecialPowers.setBoolPref("full-screen-api.allow-trusted-requests-only", false);
+}
+
+addLoadEvent(function() {
+  if (typeof start !== 'undefined') {
+    SimpleTest.waitForFocus(start);
+  }
+});
+