Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

29 files changed, 1876 insertions, 0 deletions

diff --git a/dom/performance/tests/empty.js b/dom/performance/tests/empty.js
new file mode 100644
index 0000000000..3b44754e30
--- /dev/null
+++ b/dom/performance/tests/empty.js
@@ -0,0 +1 @@
+/* Nothing here */
diff --git a/dom/performance/tests/logo.png b/dom/performance/tests/logo.png
new file mode 100644
index 0000000000..a05926bcd7
--- /dev/null
+++ b/dom/performance/tests/logo.png
diff --git a/dom/performance/tests/mochitest.ini b/dom/performance/tests/mochitest.ini
new file mode 100644
index 0000000000..9fbdac9efe
--- /dev/null
+++ b/dom/performance/tests/mochitest.ini
@@ -0,0 +1,44 @@
+[DEFAULT]
+support-files =
+  test_performance_observer.js
+  test_performance_user_timing.js
+  test_worker_performance_now.js
+  worker_performance_user_timing.js
+  worker_performance_observer.js
+  sharedworker_performance_user_timing.js
+  test_worker_performance_entries.js
+  test_worker_performance_entries.sjs
+  empty.js
+  serverTiming.sjs
+
+[test_performance_observer.html]
+[test_performance_user_timing.html]
+[test_performance_user_timing_dying_global.html]
+[test_performance_navigation_timing.html]
+[test_performance_paint_timing.html]
+support-files =
+  test_performance_paint_timing_helper.html
+  logo.png
+[test_performance_paint_observer.html]
+support-files =
+  test_performance_paint_observer_helper.html
+  logo.png
+[test_worker_user_timing.html]
+[test_worker_observer.html]
+[test_sharedWorker_performance_user_timing.html]
+skip-if = true # Bug 1571904
+[test_worker_performance_now.html]
+[test_timeOrigin.html]
+skip-if = toolkit == 'android' # Bug 1525959
+[test_worker_performance_entries.html]
+skip-if =
+  toolkit == 'android' # Bug 1525959
+  http3
+[test_performance_timing_json.html]
+[test_performance_server_timing.html]
+scheme = https
+skip-if =
+  http3
+[test_performance_server_timing_plain_http.html]
+skip-if =
+  http3
diff --git a/dom/performance/tests/serverTiming.sjs b/dom/performance/tests/serverTiming.sjs
new file mode 100644
index 0000000000..8a93829fa5
--- /dev/null
+++ b/dom/performance/tests/serverTiming.sjs
@@ -0,0 +1,41 @@
+var responseServerTiming = [
+  { metric: "metric1", duration: "123.4", description: "description1" },
+  { metric: "metric2", duration: "456.78", description: "description2" },
+];
+var trailerServerTiming = [
+  { metric: "metric3", duration: "789.11", description: "description3" },
+  { metric: "metric4", duration: "1112.13", description: "description4" },
+];
+
+function createServerTimingHeader(headerData) {
+  var header = "";
+  for (var i = 0; i < headerData.length; i++) {
+    header +=
+      "Server-Timing:" +
+      headerData[i].metric +
+      ";" +
+      "dur=" +
+      headerData[i].duration +
+      ";" +
+      "desc=" +
+      headerData[i].description +
+      "\r\n";
+  }
+  return header;
+}
+
+function handleRequest(request, response) {
+  var body = "c\r\ndata reached\r\n3\r\nhej\r\n0\r\n";
+
+  response.seizePower();
+  response.write("HTTP/1.1 200 OK\r\n");
+  response.write("Content-Type: text/plain\r\n");
+  response.write(createServerTimingHeader(responseServerTiming));
+
+  response.write("Transfer-Encoding: chunked\r\n");
+  response.write("\r\n");
+  response.write(body);
+  response.write(createServerTimingHeader(trailerServerTiming));
+  response.write("\r\n");
+  response.finish();
+}
diff --git a/dom/performance/tests/sharedworker_performance_user_timing.js b/dom/performance/tests/sharedworker_performance_user_timing.js
new file mode 100644
index 0000000000..6dcbd5d7d9
--- /dev/null
+++ b/dom/performance/tests/sharedworker_performance_user_timing.js
@@ -0,0 +1,38 @@
+var port;
+
+function ok(a, msg) {
+  dump("OK: " + !!a + "  =>  " + a + " " + msg + "\n");
+  port.postMessage({ type: "status", status: !!a, msg: a + ": " + msg });
+}
+
+function is(a, b, msg) {
+  dump("IS: " + (a === b) + "  =>  " + a + " | " + b + " " + msg + "\n");
+  port.postMessage({
+    type: "status",
+    status: a === b,
+    msg: a + " === " + b + ": " + msg,
+  });
+}
+
+function isnot(a, b, msg) {
+  dump("ISNOT: " + (a === b) + "  =>  " + a + " | " + b + " " + msg + "\n");
+  port.postMessage({
+    type: "status",
+    status: a != b,
+    msg: a + " != " + b + ": " + msg,
+  });
+}
+
+importScripts("test_performance_user_timing.js");
+
+onconnect = function (evt) {
+  port = evt.ports[0];
+
+  for (var i = 0; i < steps.length; ++i) {
+    performance.clearMarks();
+    performance.clearMeasures();
+    steps[i]();
+  }
+
+  port.postMessage({ type: "finish" });
+};
diff --git a/dom/performance/tests/test_performance_navigation_timing.html b/dom/performance/tests/test_performance_navigation_timing.html
new file mode 100644
index 0000000000..abcf9fd340
--- /dev/null
+++ b/dom/performance/tests/test_performance_navigation_timing.html
@@ -0,0 +1,104 @@
+<!DOCTYPE HTML>
+<html>
+    <!--
+    https://bugzilla.mozilla.org/show_bug.cgi?id=1462891
+    -->
+    <head>
+        <title>Test for Bug 1462891</title>
+        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+        <script src="/tests/SimpleTest/SimpleTest.js"></script>
+    </head>
+    <body>
+        <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1462891">Mozilla Bug 1462891 - Navigation Timing API</a>
+        <div id="content">
+        </div>
+        <pre id="test">
+            <script class="testbody" type="text/javascript">
+             var index = 0;
+             let isRounded = (x, shouldRound, expectedPrecision) => {
+                if (!shouldRound)
+                   return true;
+
+                let rounded = (Math.floor(x / expectedPrecision) * expectedPrecision);
+                // First we do the perfectly normal check that should work just fine
+                if (rounded === x || x === 0)
+                return true;
+
+                // When we're diving by non-whole numbers, we may not get perfect
+                // multiplication/division because of floating points.
+                // When dealing with ms since epoch, a double's precision is on the order
+                // of 1/5 of a microsecond, so we use a value a little higher than that as
+                // our epsilon.
+                // To be clear, this error is introduced in our re-calculation of 'rounded'
+                // above in JavaScript.
+                if (Math.abs(rounded - x + expectedPrecision) < .0005) {
+                 return true;
+                } else if (Math.abs(rounded - x) < .0005) {
+                 return true;
+                }
+
+                 // Then we handle the case where you're sub-millisecond and the timer is not
+                 // We check that the timer is not sub-millisecond by assuming it is not if it
+                 // returns an even number of milliseconds
+                 if (expectedPrecision < 1 && Math.round(x) == x) {
+                   if (Math.round(rounded) == x) {
+                     return true;
+                   }
+                 }
+
+                 ok(false, "Looming Test Failure, Additional Debugging Info: Expected Precision: " + expectedPrecision + " Measured Value: " + x +
+                   " Rounded Vaue: " + rounded + " Fuzzy1: " + Math.abs(rounded - x + expectedPrecision) +
+                   " Fuzzy 2: " + Math.abs(rounded - x));
+
+                 return false;
+            };
+
+            var metrics = [
+                "unloadEventStart",
+                "unloadEventEnd",
+                "domInteractive",
+                "domContentLoadedEventStart",
+                "domContentLoadedEventEnd",
+                "domComplete",
+                "loadEventStart",
+                "loadEventEnd"
+            ];
+
+            async function runTests(resistFingerprinting, reduceTimerPrecision, expectedPrecision) {
+                await SpecialPowers.pushPrefEnv({
+                    "set": [["privacy.resistFingerprinting", resistFingerprinting],
+                            ["privacy.reduceTimerPrecision", reduceTimerPrecision],
+                            ["privacy.resistFingerprinting.reduceTimerPrecision.microseconds", expectedPrecision * 1000]
+                ]});
+                var entries = performance.getEntriesByType("navigation");
+                is(entries.length, 1, "Checking PerformanceNavigationEntry count");
+
+                for (let i=0; i<entries.length; i++) {
+                    for (let j=0; j<metrics.length; j++) {
+                        ok(isRounded(entries[i][metrics[j]], reduceTimerPrecision, expectedPrecision),
+                            "Testing " + metrics[j] + " with value " + entries[i][metrics[j]] +
+                            " with resistFingerprinting " + resistFingerprinting + " reduceTimerPrecision " +
+                            reduceTimerPrecision + " precision " + expectedPrecision);
+                    }
+                }
+            }
+
+            async function startTests() {
+                await runTests(false, false, 2);
+                await runTests(true, false, 2);
+                await runTests(true, true, 2);
+                await runTests(false, true, 1000);
+                await runTests(false, true, 133);
+                await runTests(false, true, 13);
+                await runTests(false, true, 2);
+                await runTests(false, true, 1);
+
+                SimpleTest.finish();
+            }
+
+            SimpleTest.waitForExplicitFinish();
+            addLoadEvent(startTests);
+            </script>
+        </pre>
+    </body>
+</html>
diff --git a/dom/performance/tests/test_performance_observer.html b/dom/performance/tests/test_performance_observer.html
new file mode 100644
index 0000000000..86c780c56c
--- /dev/null
+++ b/dom/performance/tests/test_performance_observer.html
@@ -0,0 +1,142 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Test for performance observer</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<div id="log"></div>
+<script>
+SimpleTest.requestFlakyTimeout("For testing when observer callbacks should not be called.");
+SimpleTest.waitForExplicitFinish();
+
+let _tests = [];
+
+let test = promise_test = fn => {
+  let cleanups = [];
+  _tests.push(async () => {
+    try {
+      await fn({
+        add_cleanup: f => { cleanups.push(f); },
+        step_timeout(f, timeout) {
+          var test_this = this;
+          var args = Array.prototype.slice.call(arguments, 2);
+          return setTimeout(() => {
+            return f.apply(test_this, args);
+          }, timeout);
+        }
+      });
+    } catch(e) {
+      ok(false, `got unexpected exception ${e}`);
+    }
+    try {
+      for (const f of cleanups) {
+        f();
+      }
+      runNextTest();
+    } catch (e) {
+      ok(false, `got unexpected exception during cleanup ${e}`);
+    }
+  });
+}
+
+function runNextTest() {
+  if (!_tests.length) {
+    SimpleTest.finish()
+    return;
+  }
+  _tests.shift()();
+}
+
+function assert_equals(actual, expected, description) {
+  ok(typeof actual == typeof expected,
+     `${description} expected (${typeof expected}) ${expected} but got (${typeof actual}) ${actual}`);
+  ok(Object.is(actual, expected),
+     `${description} expected ${expected} but got ${actual}`);
+}
+
+function assert_array_equals(actual, expected, description) {
+  ok(actual.length === expected.length,
+     `${description} lengths differ, expected ${expected.length} but got ${actual.length}`);
+  for (var i = 0; i < actual.length; i++) {
+    ok(actual.hasOwnProperty(i) === expected.hasOwnProperty(i),
+       `${description} property expected to be ${expected[i]} but got ${actual[i]}`);
+  }
+}
+
+function assert_throws(expected_exc, func, desc) {
+  try {
+    func.call(this);
+  } catch(e) {
+    var actual = e.name || e.type;
+    var expected = expected_exc.name || expected_exc.type;
+    ok(actual == expected,
+       `Expected '${expected}', got '${actual}'.`);
+    return;
+  }
+  ok(false, "Expected exception, but none was thrown");
+}
+
+function assert_unreached(description) {
+  ok(false, `${description} reached unreachable code`);
+}
+</script>
+<script src="test_performance_observer.js"></script>
+<script>
+function makeXHR(aUrl) {
+  var xmlhttp = new XMLHttpRequest();
+  xmlhttp.open("get", aUrl, true);
+  xmlhttp.send();
+}
+
+let waitForConsole = new Promise(resolve => {
+  SimpleTest.monitorConsole(resolve, [{
+    message: /JavaScript Warning: "Ignoring unsupported entryTypes: invalid."/,
+  }]);
+});
+
+promise_test(t => {
+  var promise = new Promise(resolve => {
+    performance.clearResourceTimings();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe({entryTypes: ['resource']});
+    t.add_cleanup(() => observer.disconnect());
+  });
+
+  makeXHR("test-data.json");
+
+  return promise.then(async list => {
+    assert_equals(list.getEntries().length, 1);
+    assert_array_equals(list.getEntries(),
+                        performance.getEntriesByType("resource"),
+                        "Observed 'resource' entries should equal to entries obtained by getEntriesByType.");
+
+    // getEntries filtering tests
+    assert_array_equals(list.getEntries({name: "http://mochi.test:8888/tests/dom/base/test/test-data.json"}),
+                        performance.getEntriesByName("http://mochi.test:8888/tests/dom/base/test/test-data.json"),
+                        "getEntries with name filter should return correct results.");
+    assert_array_equals(list.getEntries({entryType: "resource"}),
+                        performance.getEntriesByType("resource"),
+                        "getEntries with entryType filter should return correct results.");
+    assert_array_equals(list.getEntries({initiatorType: "xmlhttprequest"}),
+                        performance.getEntriesByType("resource"),
+                        "getEntries with initiatorType filter should return correct results.");
+    assert_array_equals(list.getEntries({initiatorType: "link"}),
+                        [],
+                        "getEntries with non-existent initiatorType filter should return an empty array.");
+
+    SimpleTest.endMonitorConsole();
+    await waitForConsole;
+  });
+}, "resource-timing test");
+
+runNextTest();
+</script>
+</body>
diff --git a/dom/performance/tests/test_performance_observer.js b/dom/performance/tests/test_performance_observer.js
new file mode 100644
index 0000000000..ddc57d4096
--- /dev/null
+++ b/dom/performance/tests/test_performance_observer.js
@@ -0,0 +1,286 @@
+test(t => {
+  assert_throws(
+    { name: "TypeError" },
+    function () {
+      new PerformanceObserver();
+    },
+    "PerformanceObserver constructor should throw TypeError if no argument is specified."
+  );
+
+  assert_throws(
+    { name: "TypeError" },
+    function () {
+      new PerformanceObserver({});
+    },
+    "PerformanceObserver constructor should throw TypeError if the argument is not a function."
+  );
+}, "Test that PerformanceObserver constructor throws exception");
+
+test(t => {
+  var observer = new PerformanceObserver(() => {});
+
+  assert_throws(
+    { name: "TypeError" },
+    function () {
+      observer.observe();
+    },
+    "observe() should throw TypeError exception if no option specified."
+  );
+
+  assert_throws(
+    { name: "TypeError" },
+    function () {
+      observer.observe({ unsupportedAttribute: "unsupported" });
+    },
+    "obsrve() should throw TypeError exception if the option has no 'entryTypes' attribute."
+  );
+
+  assert_equals(
+    undefined,
+    observer.observe({ entryTypes: [] }),
+    "observe() should silently ignore empty 'entryTypes' sequence."
+  );
+
+  assert_throws(
+    { name: "TypeError" },
+    function () {
+      observer.observe({ entryTypes: null });
+    },
+    "obsrve() should throw TypeError exception if 'entryTypes' attribute is null."
+  );
+
+  assert_equals(
+    undefined,
+    observer.observe({ entryTypes: ["invalid"] }),
+    "observe() should silently ignore invalid 'entryTypes' values."
+  );
+}, "Test that PerformanceObserver.observe throws exception");
+
+function promiseObserve(test, options) {
+  return new Promise(resolve => {
+    performance.clearMarks();
+    performance.clearMeasures();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe(options);
+    test.add_cleanup(() => observer.disconnect());
+  });
+}
+
+promise_test(t => {
+  var promise = promiseObserve(t, { entryTypes: ["mark", "measure"] });
+
+  performance.mark("test-start");
+  performance.mark("test-end");
+  performance.measure("test-measure", "test-start", "test-end");
+
+  return promise.then(list => {
+    assert_equals(
+      list.getEntries().length,
+      3,
+      "There should be three observed entries."
+    );
+
+    var markEntries = list.getEntries().filter(entry => {
+      return entry.entryType == "mark";
+    });
+    assert_array_equals(
+      markEntries,
+      performance.getEntriesByType("mark"),
+      "Observed 'mark' entries should equal to entries obtained by getEntriesByType."
+    );
+
+    var measureEntries = list.getEntries().filter(entry => {
+      return entry.entryType == "measure";
+    });
+    assert_array_equals(
+      measureEntries,
+      performance.getEntriesByType("measure"),
+      "Observed 'measure' entries should equal to entries obtained by getEntriesByType."
+    );
+  });
+}, "Test for user-timing with PerformanceObserver");
+
+promise_test(t => {
+  var promise = new Promise((resolve, reject) => {
+    performance.clearMarks();
+    performance.clearMeasures();
+
+    var observer = new PerformanceObserver(list => reject(list));
+    observer.observe({ entryTypes: ["mark", "measure"] });
+    observer.disconnect();
+    t.step_timeout(resolve, 100);
+  });
+
+  performance.mark("test-start");
+  performance.mark("test-end");
+  performance.measure("test-measure", "test-start", "test-end");
+
+  return promise.then(
+    () => {
+      assert_equals(performance.getEntriesByType("mark").length, 2);
+      assert_equals(performance.getEntriesByType("measure").length, 1);
+    },
+    list => {
+      assert_unreached("Observer callback should never be called.");
+    }
+  );
+}, "Nothing should be notified after disconnecting observer");
+
+promise_test(t => {
+  var promise = promiseObserve(t, { entryTypes: ["mark"] });
+
+  performance.mark("test");
+
+  return promise.then(list => {
+    assert_array_equals(
+      list.getEntries({ entryType: "mark" }),
+      performance.getEntriesByType("mark"),
+      "getEntries with entryType filter should return correct results."
+    );
+
+    assert_array_equals(
+      list.getEntries({ name: "test" }),
+      performance.getEntriesByName("test"),
+      "getEntries with name filter should return correct results."
+    );
+
+    assert_array_equals(
+      list.getEntries({ name: "test", entryType: "mark" }),
+      performance.getEntriesByName("test"),
+      "getEntries with name and entryType filter should return correct results."
+    );
+
+    assert_array_equals(
+      list.getEntries({ name: "invalid" }),
+      [],
+      "getEntries with non-existent name filter should return an empty array."
+    );
+
+    assert_array_equals(
+      list.getEntries({ name: "test", entryType: "measure" }),
+      [],
+      "getEntries with name filter and non-existent entryType should return an empty array."
+    );
+
+    assert_array_equals(
+      list.getEntries({ name: "invalid", entryType: "mark" }),
+      [],
+      "getEntries with non-existent name and entryType filter should return an empty array."
+    );
+
+    assert_array_equals(
+      list.getEntries({ initiatorType: "xmlhttprequest" }),
+      [],
+      "getEntries with initiatorType filter should return an empty array."
+    );
+  });
+}, "Test for PerformanceObserverEntryList.getEntries");
+
+promise_test(t => {
+  var promise = promiseObserve(t, { entryTypes: ["mark", "measure"] });
+
+  performance.mark("test");
+  performance.measure("test-measure", "test", "test");
+
+  return promise.then(list => {
+    assert_array_equals(
+      list.getEntriesByType("mark"),
+      performance.getEntriesByType("mark")
+    );
+    assert_array_equals(
+      list.getEntriesByType("measure"),
+      performance.getEntriesByType("measure")
+    );
+  });
+}, "Test for PerformanceObserverEntryList.getEntriesByType");
+
+promise_test(t => {
+  var promise = promiseObserve(t, { entryTypes: ["mark", "measure"] });
+
+  performance.mark("test");
+  performance.measure("test-measure", "test", "test");
+
+  return promise.then(list => {
+    assert_array_equals(
+      list.getEntriesByName("test"),
+      performance.getEntriesByName("test")
+    );
+    assert_array_equals(
+      list.getEntriesByName("test-measure"),
+      performance.getEntriesByName("test-measure")
+    );
+  });
+}, "Test for PerformanceObserverEntryList.getEntriesByName");
+
+promise_test(t => {
+  var promise = new Promise(resolve => {
+    performance.clearMarks();
+    performance.clearMeasures();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe({ entryTypes: ["mark", "measure"] });
+    observer.observe({ entryTypes: ["mark", "measure"] });
+    t.add_cleanup(() => observer.disconnect());
+  });
+
+  performance.mark("test-start");
+  performance.mark("test-end");
+  performance.measure("test-measure", "test-start", "test-end");
+
+  return promise.then(list => {
+    assert_equals(
+      list.getEntries().length,
+      3,
+      "Observed user timing entries should have only three entries."
+    );
+  });
+}, "Test that invoking observe method twice affects nothing");
+
+promise_test(t => {
+  var promise = new Promise(resolve => {
+    performance.clearMarks();
+    performance.clearMeasures();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe({ entryTypes: ["mark", "measure"] });
+    observer.observe({ entryTypes: ["mark"] });
+    t.add_cleanup(() => observer.disconnect());
+  });
+
+  performance.mark("test-start");
+  performance.mark("test-end");
+  performance.measure("test-measure", "test-start", "test-end");
+
+  return promise.then(list => {
+    assert_equals(
+      list.getEntries().length,
+      2,
+      "Observed user timing entries should have only two entries."
+    );
+  });
+}, "Test that observing filter is replaced by a new filter");
+
+promise_test(t => {
+  var promise = new Promise(resolve => {
+    performance.clearMarks();
+    performance.clearMeasures();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe({ entryTypes: ["mark"] });
+    observer.observe({ entryTypes: ["measure"] });
+    t.add_cleanup(() => observer.disconnect());
+  });
+
+  performance.mark("test-start");
+  performance.mark("test-end");
+  performance.measure("test-measure", "test-start", "test-end");
+
+  return promise.then(list => {
+    assert_equals(
+      list.getEntries().length,
+      1,
+      "Observed user timing entries should have only 1 entries."
+    );
+  });
+}, "Test that observing filter is replaced by a new filter");
diff --git a/dom/performance/tests/test_performance_paint_observer.html b/dom/performance/tests/test_performance_paint_observer.html
new file mode 100644
index 0000000000..2ded1db797
--- /dev/null
+++ b/dom/performance/tests/test_performance_paint_observer.html
@@ -0,0 +1,40 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+    <!--
+      https://bugzilla.mozilla.org/show_bug.cgi?id=1518999
+    -->
+    <head>
+        <title>Test for Bug 1518999 (Observer API) </title>
+        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+        <script src="/tests/SimpleTest/SimpleTest.js"></script>
+        <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+    </head>
+    <body>
+        <a target="_blank"
+          href="https://bugzilla.mozilla.org/show_bug.cgi?id=1518999">Mozilla
+          Bug 1518999 - Paint Timing API For Observers</a>
+        <p id="display"></p>
+        <div id="content" style="display: none">
+        <pre id="test">
+            <script class="testbody" type="text/javascript">
+             let tab;
+             function runTest() {
+                tab = window.open("test_performance_paint_observer_helper.html");
+             }
+
+             function done() {
+                tab.close();
+                SimpleTest.finish();
+             }
+
+             SimpleTest.waitForExplicitFinish();
+             addLoadEvent(runTest);
+            </script>
+        </pre>
+        </div>
+    </body>
+</html>
diff --git a/dom/performance/tests/test_performance_paint_observer_helper.html b/dom/performance/tests/test_performance_paint_observer_helper.html
new file mode 100644
index 0000000000..ae27c9480d
--- /dev/null
+++ b/dom/performance/tests/test_performance_paint_observer_helper.html
@@ -0,0 +1,35 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+  <body>
+  </body>
+  <script>
+    var promise = new Promise(resolve => {
+      var observer = new PerformanceObserver(list => resolve(list));
+      observer.observe({entryTypes: ["paint"]});
+    });
+
+    promise.then(list => {
+      var perfEntries = list.getEntries();
+      opener.is(list.getEntries().length, 1);
+      opener.isDeeply(list.getEntries(),
+                performance.getEntriesByType("paint"),
+                "Observed 'paint' entries should equal to entries obtained by getEntriesByType.");
+      opener.isDeeply(list.getEntries({name: "paint"}),
+                performance.getEntriesByName("paint"),
+                "getEntries with name filter should return correct results.");
+      opener.isDeeply(list.getEntries({entryType: "paint"}),
+                performance.getEntriesByType("paint"),
+                "getEntries with entryType filter should return correct results.");
+      opener.done();
+    });
+
+    const img = document.createElement("IMG");
+    img.src = "http://example.org/tests/dom/performance/tests/logo.png";
+    document.body.appendChild(img);
+
+  </script>
+</html>
diff --git a/dom/performance/tests/test_performance_paint_timing.html b/dom/performance/tests/test_performance_paint_timing.html
new file mode 100644
index 0000000000..f8784ecf26
--- /dev/null
+++ b/dom/performance/tests/test_performance_paint_timing.html
@@ -0,0 +1,38 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+    <!--
+      https://bugzilla.mozilla.org/show_bug.cgi?id=1518999
+    -->
+    <head>
+        <title>Test for Bug 1518999</title>
+        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+        <script src="/tests/SimpleTest/SimpleTest.js"></script>
+        <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+    </head>
+    <body>
+        <a target="_blank"
+          href="https://bugzilla.mozilla.org/show_bug.cgi?id=1518999">Mozilla
+          Bug 1518999 - Paint Timing API</a>
+        <p id="display"></p>
+        <div id="content" style="display: none">
+        <pre id="test">
+            <script class="testbody" type="text/javascript">
+             let tab;
+             function runTest() {
+                tab = window.open("test_performance_paint_timing_helper.html");
+             }
+             function done() {
+                tab.close();
+                SimpleTest.finish();
+             }
+             SimpleTest.waitForExplicitFinish();
+             addLoadEvent(runTest);
+            </script>
+        </pre>
+        </div>
+    </body>
+</html>
diff --git a/dom/performance/tests/test_performance_paint_timing_helper.html b/dom/performance/tests/test_performance_paint_timing_helper.html
new file mode 100644
index 0000000000..c05b38cac0
--- /dev/null
+++ b/dom/performance/tests/test_performance_paint_timing_helper.html
@@ -0,0 +1,65 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+    <!--
+      https://bugzilla.mozilla.org/show_bug.cgi?id=1518999
+    -->
+    <head>
+        <title>Test for Bug 1518999</title>
+        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+    </head>
+    <body>
+        <div id="main"></div>
+        <div id="image"></div>
+        <div id="test">
+            <script class="testbody" type="text/javascript">
+             async function runTest() {
+                const paintEntries = performance.getEntriesByType('paint');
+                opener.is(paintEntries.length, 0, "No paint entries yet");
+
+                const img = document.createElement("img");
+                img.src = "http://example.org/tests/dom/performance/tests/logo.png";
+
+                img.onload = function() {
+                  function getAndTestEntries(runCount) {
+                    function testEntries(entries) {
+                      opener.is(entries.length, 1, "FCP Only returns");
+                      opener.is(entries[0].entryType, "paint", "entryType is paint");
+                      opener.is(entries[0].name, "first-contentful-paint",
+                                "Returned entry should be first-contentful-paint" );
+                      const fcpEntriesGotByName =
+                          performance.getEntriesByName('first-contentful-paint');
+                      opener.is(fcpEntriesGotByName.length, 1, "entries length should match");
+                      opener.is(entries[0], fcpEntriesGotByName[0], "should be the same entry");
+                      opener.done();
+                    }
+                    const entries = performance.getEntriesByType('paint');
+                    if (entries.length < 1) {
+                      if (runCount < 4) {
+                        opener.SimpleTest.requestFlakyTimeout("FCP is being registered asynchronously, so wait a bit of time");
+                        setTimeout(function() {
+                          getAndTestEntries(runCount + 1);
+                        }, 20);
+                      } else {
+                        opener.ok(false, "Unable to find paint entries within a reasonable amount of time");
+                        opener.done();
+                      }
+                    } else {
+                        testEntries(entries);
+                    }
+                  }
+                  getAndTestEntries(1);
+                }
+                document.body.appendChild(img);
+             }
+             window.onload = function() {
+                runTest();
+             }
+            </script>
+        </div>
+        </div>
+    </body>
+</html>
diff --git a/dom/performance/tests/test_performance_server_timing.html b/dom/performance/tests/test_performance_server_timing.html
new file mode 100644
index 0000000000..cba11a5fdd
--- /dev/null
+++ b/dom/performance/tests/test_performance_server_timing.html
@@ -0,0 +1,58 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Test for PerformanceServerTiming</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<script>
+function makeXHR(aUrl) {
+  var xmlhttp = new XMLHttpRequest();
+  xmlhttp.open("get", aUrl, true);
+  xmlhttp.send();
+}
+
+// Note that |responseServerTiming| and |trailerServerTiming| SHOULD be synced with
+// the ones in serverTiming.sjs.
+var responseServerTiming = [{metric:"metric1", duration:"123.4", description:"description1"},
+                            {metric:"metric2", duration:"456.78", description:"description2"}];
+var trailerServerTiming = [{metric:"metric3", duration:"789.11", description:"description3"},
+                           {metric:"metric4", duration:"1112.13", description:"description4"}];
+
+function checkServerTimingContent(serverTiming) {
+  var expectedResult = responseServerTiming.concat(trailerServerTiming);
+  assert_equals(serverTiming.length, expectedResult.length);
+
+  for (var i = 0; i < expectedResult.length; i++) {
+    assert_equals(serverTiming[i].name, expectedResult[i].metric);
+    assert_equals(serverTiming[i].description, expectedResult[i].description);
+    assert_equals(serverTiming[i].duration, parseFloat(expectedResult[i].duration));
+  }
+}
+
+promise_test(t => {
+  var promise = new Promise(resolve => {
+    performance.clearResourceTimings();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe({entryTypes: ['resource']});
+    t.add_cleanup(() => observer.disconnect());
+  });
+
+  makeXHR("serverTiming.sjs");
+
+  return promise.then(list => {
+    assert_equals(list.getEntries().length, 1);
+    checkServerTimingContent(list.getEntries()[0].serverTiming);
+  });
+}, "server-timing test");
+
+</script>
+</body>
diff --git a/dom/performance/tests/test_performance_server_timing_plain_http.html b/dom/performance/tests/test_performance_server_timing_plain_http.html
new file mode 100644
index 0000000000..7dcb8bd38d
--- /dev/null
+++ b/dom/performance/tests/test_performance_server_timing_plain_http.html
@@ -0,0 +1,42 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Plain HTTP Test for PerformanceServerTiming</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<script>
+function makeXHR(aUrl) {
+  var xmlhttp = new XMLHttpRequest();
+  xmlhttp.open("get", aUrl, true);
+  xmlhttp.send();
+}
+
+promise_test(t => {
+  var promise = new Promise(resolve => {
+    performance.clearResourceTimings();
+
+    var observer = new PerformanceObserver(list => resolve(list));
+    observer.observe({entryTypes: ['resource']});
+    t.add_cleanup(() => observer.disconnect());
+  });
+
+  makeXHR("serverTiming.sjs");
+
+  return promise.then(list => {
+    assert_equals(list.getEntries().length, 1);
+    assert_equals(list.getEntries()[0].serverTiming, undefined);
+    assert_equals(list.getEntries()[0].toJSON().serverTiming, undefined,
+		  "toJSON should not pick up properties that aren't on the object");
+  });
+}, "server-timing test");
+
+</script>
+</body>
diff --git a/dom/performance/tests/test_performance_timing_json.html b/dom/performance/tests/test_performance_timing_json.html
new file mode 100644
index 0000000000..97079c0d2f
--- /dev/null
+++ b/dom/performance/tests/test_performance_timing_json.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1375829
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 1375829</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 1375829 **/
+  var json = performance.timing.toJSON();
+
+  // Ensure it doesn't have any attributes that performance.timing doesn't have
+  for (let key of Object.keys(json)) {
+    ok(key in performance.timing, key + " should be a property of performance.timing");
+  }
+
+  </script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1375829">Mozilla Bug 1375829</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
diff --git a/dom/performance/tests/test_performance_user_timing.html b/dom/performance/tests/test_performance_user_timing.html
new file mode 100644
index 0000000000..fa0aaceb4e
--- /dev/null
+++ b/dom/performance/tests/test_performance_user_timing.html
@@ -0,0 +1,49 @@
+<!DOCTYPE HTML>
+<html>
+    <!--
+              https://bugzilla.mozilla.org/show_bug.cgi?id=782751
+              -->
+    <head>
+        <title>Test for Bug 782751</title>
+        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+        <script src="/tests/SimpleTest/SimpleTest.js"></script>
+        <script type="text/javascript" src="test_performance_user_timing.js"></script>
+    </head>
+    <body>
+        <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=782751">Mozilla Bug 782751 - User Timing API</a>
+        <div id="content">
+        </div>
+        <pre id="test">
+            <script class="testbody" type="text/javascript">
+             var index = 0;
+
+             function next() {
+                 ok(true, "Begin!");
+                 var arr;
+                 for (var i = 0; i < steps.length; ++i) {
+                     try {
+                         performance.clearMarks();
+                         performance.clearMeasures();
+                         performance.clearResourceTimings();
+                         is(performance.getEntriesByType("resource").length, 0, "clearing performance resource entries");
+                         is(performance.getEntriesByType("mark").length, 0, "clearing performance mark entries");
+                         is(performance.getEntriesByType("measure").length, 0, "clearing performance measure entries");
+                         steps[i]();
+                     } catch(ex) {
+                         ok(false, "Caught exception", ex);
+                     }
+                 }
+
+                SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
+                SimpleTest.finish();
+             }
+
+             var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
+             SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
+
+             SimpleTest.waitForExplicitFinish();
+             addLoadEvent(next);
+            </script>
+        </pre>
+    </body>
+</html>
diff --git a/dom/performance/tests/test_performance_user_timing.js b/dom/performance/tests/test_performance_user_timing.js
new file mode 100644
index 0000000000..c98bee6f11
--- /dev/null
+++ b/dom/performance/tests/test_performance_user_timing.js
@@ -0,0 +1,318 @@
+var steps = [
+  // Test single mark addition
+  function () {
+    ok(true, "Running mark addition test");
+    performance.mark("test");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 1, "Number of marks should be 1");
+    var mark = marks[0];
+    is(mark.name, "test", "mark name should be 'test'");
+    is(mark.entryType, "mark", "mark type should be 'mark'");
+    isnot(mark.startTime, 0, "mark start time should not be 0");
+    is(mark.duration, 0, "mark duration should be 0");
+  },
+  // Test multiple mark addition
+  function () {
+    ok(true, "Running multiple mark with same name addition test");
+    performance.mark("test");
+    performance.mark("test");
+    performance.mark("test");
+    var marks_type = performance.getEntriesByType("mark");
+    is(marks_type.length, 3, "Number of marks by type should be 3");
+    var marks_name = performance.getEntriesByName("test");
+    is(marks_name.length, 3, "Number of marks by name should be 3");
+    var mark = marks_name[0];
+    is(mark.name, "test", "mark name should be 'test'");
+    is(mark.entryType, "mark", "mark type should be 'mark'");
+    isnot(mark.startTime, 0, "mark start time should not be 0");
+    is(mark.duration, 0, "mark duration should be 0");
+    var times = [];
+    // This also tests the chronological ordering specified as
+    // required for getEntries in the performance timeline spec.
+    marks_name.forEach(function (s) {
+      times.forEach(function (time) {
+        ok(
+          s.startTime >= time.startTime,
+          "Times should be equal or increasing between similarly named marks: " +
+            s.startTime +
+            " >= " +
+            time.startTime
+        );
+      });
+      times.push(s);
+    });
+  },
+  // Test all marks removal
+  function () {
+    ok(true, "Running all mark removal test");
+    performance.mark("test");
+    performance.mark("test2");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 2, "number of marks before all removal");
+    performance.clearMarks();
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 0, "number of marks after all removal");
+  },
+  // Test single mark removal
+  function () {
+    ok(true, "Running removal test (0 'test' marks with other marks)");
+    performance.mark("test2");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 1, "number of marks before all removal");
+    performance.clearMarks("test");
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 1, "number of marks after all removal");
+  },
+  // Test single mark removal
+  function () {
+    ok(true, "Running removal test (0 'test' marks with no other marks)");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 0, "number of marks before all removal");
+    performance.clearMarks("test");
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 0, "number of marks after all removal");
+  },
+  function () {
+    ok(true, "Running removal test (1 'test' mark with other marks)");
+    performance.mark("test");
+    performance.mark("test2");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 2, "number of marks before all removal");
+    performance.clearMarks("test");
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 1, "number of marks after all removal");
+  },
+  function () {
+    ok(true, "Running removal test (1 'test' mark with no other marks)");
+    performance.mark("test");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 1, "number of marks before all removal");
+    performance.clearMarks("test");
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 0, "number of marks after all removal");
+  },
+  function () {
+    ok(true, "Running removal test (2 'test' marks with other marks)");
+    performance.mark("test");
+    performance.mark("test");
+    performance.mark("test2");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 3, "number of marks before all removal");
+    performance.clearMarks("test");
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 1, "number of marks after all removal");
+  },
+  function () {
+    ok(true, "Running removal test (2 'test' marks with no other marks)");
+    performance.mark("test");
+    performance.mark("test");
+    var marks = performance.getEntriesByType("mark");
+    is(marks.length, 2, "number of marks before all removal");
+    performance.clearMarks("test");
+    marks = performance.getEntriesByType("mark");
+    is(marks.length, 0, "number of marks after all removal");
+  },
+  // Test mark name being same as navigation timing parameter
+  function () {
+    ok(true, "Running mark name collision test");
+    for (n in performance.timing) {
+      try {
+        if (n == "toJSON") {
+          ok(true, "Skipping toJSON entry in collision test");
+          continue;
+        }
+        performance.mark(n);
+        ok(
+          false,
+          "Mark name collision test failed for name " +
+            n +
+            ", shouldn't make it here!"
+        );
+      } catch (e) {
+        ok(
+          e instanceof DOMException,
+          "DOM exception thrown for mark named " + n
+        );
+        is(
+          e.code,
+          e.SYNTAX_ERR,
+          "DOM exception for name collision is syntax error"
+        );
+      }
+    }
+  },
+  // Test measure
+  function () {
+    ok(true, "Running measure addition with no start/end time test");
+    performance.measure("test");
+    var measures = performance.getEntriesByType("measure");
+    is(measures.length, 1, "number of measures should be 1");
+    var measure = measures[0];
+    is(measure.name, "test", "measure name should be 'test'");
+    is(measure.entryType, "measure", "measure type should be 'measure'");
+    is(measure.startTime, 0, "measure start time should be zero");
+    ok(measure.duration >= 0, "measure duration should not be negative");
+  },
+  function () {
+    ok(true, "Running measure addition with only start time test");
+    performance.mark("test1");
+    performance.measure("test", "test1", undefined);
+    var measures = performance.getEntriesByName("test", "measure");
+    var marks = performance.getEntriesByName("test1", "mark");
+    var measure = measures[0];
+    var mark = marks[0];
+    is(
+      measure.startTime,
+      mark.startTime,
+      "measure start time should be equal to the mark startTime"
+    );
+    ok(measure.duration >= 0, "measure duration should not be negative");
+  },
+  function () {
+    ok(true, "Running measure addition with only end time test");
+    performance.mark("test1");
+    performance.measure("test", undefined, "test1");
+    var measures = performance.getEntriesByName("test", "measure");
+    var marks = performance.getEntriesByName("test1", "mark");
+    var measure = measures[0];
+    var mark = marks[0];
+    ok(measure.duration >= 0, "measure duration should not be negative");
+  },
+  // Test measure picking latest version of similarly named tags
+  function () {
+    ok(true, "Running multiple mark with same name addition test");
+    performance.mark("test");
+    performance.mark("test");
+    performance.mark("test");
+    performance.mark("test2");
+    var marks_name = performance.getEntriesByName("test");
+    is(marks_name.length, 3, "Number of marks by name should be 3");
+    var marks_name2 = performance.getEntriesByName("test2");
+    is(marks_name2.length, 1, "Number of marks by name should be 1");
+    var test_mark = marks_name2[0];
+    performance.measure("test", "test", "test2");
+    var measures_type = performance.getEntriesByType("measure");
+    var last_mark = marks_name[marks_name.length - 1];
+    is(measures_type.length, 1, "Number of measures by type should be 1");
+    var measure = measures_type[0];
+    is(
+      measure.startTime,
+      last_mark.startTime,
+      "Measure start time should be the start time of the latest 'test' mark"
+    );
+    // Tolerance testing to avoid oranges, since we're doing double math across two different languages.
+    ok(
+      measure.duration - (test_mark.startTime - last_mark.startTime) < 0.00001,
+      "Measure duration ( " +
+        measure.duration +
+        ") should be difference between two marks"
+    );
+  },
+  function () {
+    // We don't have navigationStart in workers.
+    if ("window" in self) {
+      ok(true, "Running measure addition with no start/end time test");
+      performance.measure("test", "navigationStart");
+      var measures = performance.getEntriesByType("measure");
+      is(measures.length, 1, "number of measures should be 1");
+      var measure = measures[0];
+      is(measure.name, "test", "measure name should be 'test'");
+      is(measure.entryType, "measure", "measure type should be 'measure'");
+      is(measure.startTime, 0, "measure start time should be zero");
+      ok(measure.duration >= 0, "measure duration should not be negative");
+    }
+  },
+  // Test all measure removal
+  function () {
+    ok(true, "Running all measure removal test");
+    performance.measure("test");
+    performance.measure("test2");
+    var measures = performance.getEntriesByType("measure");
+    is(measures.length, 2, "measure entries should be length 2");
+    performance.clearMeasures();
+    measures = performance.getEntriesByType("measure");
+    is(measures.length, 0, "measure entries should be length 0");
+  },
+  // Test single measure removal
+  function () {
+    ok(true, "Running all measure removal test");
+    performance.measure("test");
+    performance.measure("test2");
+    var measures = performance.getEntriesByType("measure");
+    is(measures.length, 2, "measure entries should be length 2");
+    performance.clearMeasures("test");
+    measures = performance.getEntriesByType("measure");
+    is(measures.length, 1, "measure entries should be length 1");
+  },
+  // Test measure with invalid start time mark name
+  function () {
+    ok(true, "Running measure invalid start test");
+    try {
+      performance.measure("test", "notamark");
+      ok(false, "invalid measure start time exception not thrown!");
+    } catch (e) {
+      ok(e instanceof DOMException, "DOM exception thrown for invalid measure");
+      is(
+        e.code,
+        e.SYNTAX_ERR,
+        "DOM exception for invalid time is syntax error"
+      );
+    }
+  },
+  // Test measure with invalid end time mark name
+  function () {
+    ok(true, "Running measure invalid end test");
+    try {
+      performance.measure("test", undefined, "notamark");
+      ok(false, "invalid measure end time exception not thrown!");
+    } catch (e) {
+      ok(e instanceof DOMException, "DOM exception thrown for invalid measure");
+      is(
+        e.code,
+        e.SYNTAX_ERR,
+        "DOM exception for invalid time is syntax error"
+      );
+    }
+  },
+  // Test measure name being same as navigation timing parameter
+  function () {
+    ok(true, "Running measure name collision test");
+    for (n in performance.timing) {
+      if (n == "toJSON") {
+        ok(true, "Skipping toJSON entry in collision test");
+        continue;
+      }
+      performance.measure(n);
+      ok(true, "Measure name supports name collisions: " + n);
+    }
+  },
+  // Test measure mark being a reserved name
+  function () {
+    ok(true, "Create measures using all reserved names");
+    for (n in performance.timing) {
+      try {
+        if (n == "toJSON") {
+          ok(true, "Skipping toJSON entry in collision test");
+          continue;
+        }
+        performance.measure("test", n);
+        ok(true, "Measure created from reserved name as starting time: " + n);
+      } catch (e) {
+        ok(
+          [
+            "redirectStart",
+            "redirectEnd",
+            "unloadEventStart",
+            "unloadEventEnd",
+            "loadEventEnd",
+            "secureConnectionStart",
+          ].includes(n),
+          "Measure created from reserved name as starting time: " +
+            n +
+            " and threw expected error"
+        );
+      }
+    }
+  },
+  // TODO: Test measure picking latest version of similarly named tags
+];
diff --git a/dom/performance/tests/test_performance_user_timing_dying_global.html b/dom/performance/tests/test_performance_user_timing_dying_global.html
new file mode 100644
index 0000000000..18e4a54684
--- /dev/null
+++ b/dom/performance/tests/test_performance_user_timing_dying_global.html
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Test for User Timing APIs on dying globals</title>
+        <script src="/tests/SimpleTest/SimpleTest.js"></script>
+        <script type="text/javascript">
+            // We must wait for the iframe to load.
+            SimpleTest.waitForExplicitFinish();
+            window.addEventListener('load', () => {
+                const dyingWindow = initTest();
+                ok(true, 'Initialization complete');
+
+                testDoesNotCrash(dyingWindow);
+                SimpleTest.finish();
+            });
+
+            function initTest() {
+                // We create a dying global by creating an iframe, keeping a
+                // reference to it, and removing it.
+                const iframe = document.querySelector('iframe');
+                const iframeWindow = iframe.contentWindow;
+
+                // We want to call the User Timing functions in the context of
+                // the dying global. However, we can't call constructors
+                // directly on a reference to a window so we have to wrap it.
+                iframeWindow.newPerformanceMark = () => {
+                  new PerformanceMark('constructor', {detail: 'constructorDetail'});
+                };
+
+                // Send the global to a dying state.
+                iframe.remove();
+
+                return iframeWindow;
+            }
+
+            function testDoesNotCrash(dyingWindow) {
+                ok(true, 'Running testDoesNotCrash');
+
+                dyingWindow.newPerformanceMark();
+                ok(true, 'new PerformanceMark() on dying global did not crash');
+
+                try {
+                    dyingWindow.performance.mark('markMethod', {detail: 'markMethodDetail'});
+                } catch (e) {
+                    is(e.code, e.INVALID_STATE_ERR, 'performance.mark on dying global threw expected exception');
+                }
+                ok(true, 'performance.mark on dying global did not crash');
+
+                try {
+                    dyingWindow.performance.measure('measureMethod');
+                } catch (e) {
+                    is(e.code, e.INVALID_STATE_ERR, 'performance.measure on dying global threw expected exception');
+                }
+                ok(true, 'performance.measure on dying global did not crash');
+            }
+        </script>
+    </head>
+    <body>
+        <iframe width="200" height="200" src="about:blank"></iframe>
+    </body>
+</html>
diff --git a/dom/performance/tests/test_sharedWorker_performance_user_timing.html b/dom/performance/tests/test_sharedWorker_performance_user_timing.html
new file mode 100644
index 0000000000..d26594e292
--- /dev/null
+++ b/dom/performance/tests/test_sharedWorker_performance_user_timing.html
@@ -0,0 +1,30 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Test for worker performance timing API</title>
+    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  </head>
+  <body>
+    <script class="testbody" type="text/javascript">
+
+var sw = new SharedWorker('sharedworker_performance_user_timing.js');
+sw.port.onmessage = function(event) {
+  if (event.data.type == 'finish') {
+    SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
+    SimpleTest.finish();
+  } else if (event.data.type == 'status') {
+    ok(event.data.status, event.data.msg);
+  }
+}
+
+var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
+SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
+SimpleTest.waitForExplicitFinish();
+    </script>
+  </body>
+</html>
diff --git a/dom/performance/tests/test_timeOrigin.html b/dom/performance/tests/test_timeOrigin.html
new file mode 100644
index 0000000000..69796a432d
--- /dev/null
+++ b/dom/performance/tests/test_timeOrigin.html
@@ -0,0 +1,76 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Test for performance.timeOrigin</title>
+    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  </head>
+  <body>
+    <script type="text/js-worker" id="worker-src">
+      postMessage({ now: performance.now(), timeOrigin: performance.timeOrigin });
+    </script>
+
+    <script type="text/js-worker" id="shared-worker-src">
+      onconnect = function(evt) {
+        evt.ports[0].postMessage({ now: performance.now(), timeOrigin: performance.timeOrigin });
+      };
+    </script>
+
+    <script class="testbody" type="text/javascript">
+
+function testBasic() {
+  ok("timeOrigin" in performance, "Performance.timeOrigin exists.");
+  ok(performance.timeOrigin > 0, "TimeOrigin must be greater than 0.");
+  next();
+}
+
+function testWorker() {
+  var now = performance.now();
+
+  var blob = new Blob([ document.getElementById("worker-src").textContent ],
+                      { type: "text/javascript" });
+  var w = new Worker(URL.createObjectURL(blob));
+  w.onmessage = function(e) {
+    ok (e.data.now + e.data.timeOrigin > now + performance.timeOrigin, "Comparing worker.now and window.now");
+    next();
+  }
+}
+
+function testSharedWorker() {
+  var now = performance.now();
+
+  var blob = new Blob([ document.getElementById("shared-worker-src").textContent ],
+                      { type: "text/javascript" });
+  var w = new SharedWorker(URL.createObjectURL(blob));
+  w.port.onmessage = function(e) {
+    ok (e.data.now + e.data.timeOrigin > now + performance.timeOrigin, "Comparing worker.now and window.now");
+    next();
+  }
+}
+
+var tests = [ testBasic, testWorker, testSharedWorker ];
+function next() {
+  if (!tests.length) {
+    SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
+    SimpleTest.finish();
+    return;
+  }
+
+  var test = tests.shift();
+  test();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+// It is a known issue that comparing time between a worker and a window
+// when timer clamping is in effect may cause time to go backwards.
+// Do not run this test with this preference set. For large values of
+// clamping you will see failures. For small values, it is intermitant.
+var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
+SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
+
+addLoadEvent(next);
+      </script>
+    </pre>
+  </body>
+</html>
diff --git a/dom/performance/tests/test_worker_observer.html b/dom/performance/tests/test_worker_observer.html
new file mode 100644
index 0000000000..7f4df855c9
--- /dev/null
+++ b/dom/performance/tests/test_worker_observer.html
@@ -0,0 +1,41 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Test for performance observer in worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<script>
+const worker = new Worker("worker_performance_observer.js");
+
+promise_test(t => {
+  let found = false;
+  return new Promise(resolve => {
+    SpecialPowers.registerConsoleListener(msg => {
+      if (msg.errorMessage === "Ignoring unsupported entryTypes: invalid.") {
+        found = true;
+        resolve();
+      }
+    });
+    worker.addEventListener("error", resolve);
+    worker.addEventListener("message", function(event) {
+      if (event.data.type === "complete") {
+        resolve();
+      }
+    });
+  }).then(() => {
+    SpecialPowers.postConsoleSentinel();
+    assert_true(found, "got the expected console warning");
+  });
+}, "Console warnings about invalid types should be logged during the tests");
+
+fetch_tests_from_worker(worker);
+</script>
+</body>
diff --git a/dom/performance/tests/test_worker_performance_entries.html b/dom/performance/tests/test_worker_performance_entries.html
new file mode 100644
index 0000000000..d3f124fdb3
--- /dev/null
+++ b/dom/performance/tests/test_worker_performance_entries.html
@@ -0,0 +1,39 @@
+<!-- Any copyright is dedicated to the Public Domain.
+   - http://creativecommons.org/publicdomain/zero/1.0/ -->
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>PerformanceResouceTiming in workers</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<script class="testbody" type="text/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+// The worker assumes it will take some amount of time to load a resource.
+// With a low enough precision, the duration to load a resource may clamp
+// down to zero.
+var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
+SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
+
+var worker = new Worker('test_worker_performance_entries.js');
+worker.onmessage = function(event) {
+  if (event.data.type == "check") {
+    ok(event.data.status, event.data.msg);
+    return;
+  }
+
+  if (event.data.type == "finish") {
+    SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
+    SimpleTest.finish();
+    return;
+  }
+
+  ok(false, "?!?");
+}
+
+</script>
+</body>
+</html>
diff --git a/dom/performance/tests/test_worker_performance_entries.js b/dom/performance/tests/test_worker_performance_entries.js
new file mode 100644
index 0000000000..e3d660bd85
--- /dev/null
+++ b/dom/performance/tests/test_worker_performance_entries.js
@@ -0,0 +1,120 @@
+function ok(a, msg) {
+  postMessage({ type: "check", status: !!a, msg });
+}
+
+function is(a, b, msg) {
+  ok(a === b, msg);
+}
+
+function finish(a, msg) {
+  postMessage({ type: "finish" });
+}
+
+async function wait_for_performance_entries() {
+  let promise = new Promise(resolve => {
+    new PerformanceObserver(list => {
+      resolve(list.getEntries());
+    }).observe({ entryTypes: ["resource"] });
+  });
+  entries = await promise;
+  return entries;
+}
+
+async function check(resource, initiatorType, protocol) {
+  let entries = performance.getEntries();
+  if (!entries.length) {
+    entries = await wait_for_performance_entries();
+  }
+  ok(entries.length == 1, "We have an entry");
+
+  ok(entries[0] instanceof PerformanceEntry, "The entry is a PerformanceEntry");
+  ok(entries[0].name.endsWith(resource), "The entry has been found!");
+
+  is(entries[0].entryType, "resource", "Correct EntryType");
+  ok(entries[0].startTime > 0, "We have a startTime");
+  ok(entries[0].duration > 0, "We have a duration");
+
+  ok(
+    entries[0] instanceof PerformanceResourceTiming,
+    "The entry is a PerformanceResourceTiming"
+  );
+
+  is(entries[0].initiatorType, initiatorType, "Correct initiatorType");
+  is(entries[0].nextHopProtocol, protocol, "Correct protocol");
+
+  performance.clearResourceTimings();
+}
+
+function simple_checks() {
+  ok("performance" in self, "We have self.performance");
+  performance.clearResourceTimings();
+  next();
+}
+
+function fetch_request() {
+  fetch("test_worker_performance_entries.sjs")
+    .then(r => r.blob())
+    .then(blob => {
+      check("test_worker_performance_entries.sjs", "fetch", "http/1.1");
+    })
+    .then(next);
+}
+
+function xhr_request() {
+  let xhr = new XMLHttpRequest();
+  xhr.open("GET", "test_worker_performance_entries.sjs");
+  xhr.send();
+  xhr.onload = () => {
+    check("test_worker_performance_entries.sjs", "xmlhttprequest", "http/1.1");
+    next();
+  };
+}
+
+function sync_xhr_request() {
+  let xhr = new XMLHttpRequest();
+  xhr.open("GET", "test_worker_performance_entries.sjs", false);
+  xhr.send();
+  check("test_worker_performance_entries.sjs", "xmlhttprequest", "http/1.1");
+  next();
+}
+
+function import_script() {
+  importScripts(["empty.js"]);
+  check("empty.js", "other", "http/1.1");
+  next();
+}
+
+function redirect() {
+  fetch("test_worker_performance_entries.sjs?redirect")
+    .then(r => r.text())
+    .then(async text => {
+      is(text, "Hello world \\o/", "The redirect worked correctly");
+      await check(
+        "test_worker_performance_entries.sjs?redirect",
+        "fetch",
+        "http/1.1"
+      );
+    })
+    .then(next);
+}
+
+let tests = [
+  simple_checks,
+  fetch_request,
+  xhr_request,
+  sync_xhr_request,
+  import_script,
+  redirect,
+];
+
+function next() {
+  if (!tests.length) {
+    finish();
+    return;
+  }
+
+  let test = tests.shift();
+  test();
+}
+
+next();
diff --git a/dom/performance/tests/test_worker_performance_entries.sjs b/dom/performance/tests/test_worker_performance_entries.sjs
new file mode 100644
index 0000000000..62f00c22bc
--- /dev/null
+++ b/dom/performance/tests/test_worker_performance_entries.sjs
@@ -0,0 +1,11 @@
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "text/html");
+
+  if (request.queryString == "redirect") {
+    response.setStatusLine(request.httpVersion, 302, "See Other");
+    response.setHeader("Location", "test_worker_performance_entries.sjs?ok");
+  } else {
+    response.setStatusLine(request.httpVersion, 200, "OK");
+    response.write("Hello world \\o/");
+  }
+}
diff --git a/dom/performance/tests/test_worker_performance_now.html b/dom/performance/tests/test_worker_performance_now.html
new file mode 100644
index 0000000000..be4f8f56ea
--- /dev/null
+++ b/dom/performance/tests/test_worker_performance_now.html
@@ -0,0 +1,31 @@
+<!-- Any copyright is dedicated to the Public Domain.
+   - http://creativecommons.org/publicdomain/zero/1.0/ -->
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Validate Interfaces Exposed to Workers</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<script class="testbody" type="text/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
+SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
+
+var worker = new Worker('test_worker_performance_now.js');
+worker.onmessage = function(event) {
+  if (event.data.type == 'finish') {
+    SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
+    SimpleTest.finish();
+
+  } else if (event.data.type == 'status') {
+    ok(event.data.status, event.data.msg);
+  }
+}
+
+</script>
+</body>
+</html>
diff --git a/dom/performance/tests/test_worker_performance_now.js b/dom/performance/tests/test_worker_performance_now.js
new file mode 100644
index 0000000000..a22f66256e
--- /dev/null
+++ b/dom/performance/tests/test_worker_performance_now.js
@@ -0,0 +1,68 @@
+function ok(a, msg) {
+  dump("OK: " + !!a + "  =>  " + a + ": " + msg + "\n");
+  postMessage({ type: "status", status: !!a, msg: a + ": " + msg });
+}
+
+function workerTestDone() {
+  postMessage({ type: "finish" });
+}
+
+ok(self.performance, "Performance object should exist.");
+ok(
+  typeof self.performance.now == "function",
+  "Performance object should have a 'now' method."
+);
+var n = self.performance.now(),
+  d = Date.now();
+ok(n >= 0, "The value of now() should be equal to or greater than 0.");
+ok(
+  self.performance.now() >= n,
+  "The value of now() should monotonically increase."
+);
+
+// Spin on setTimeout() until performance.now() increases. Due to recent
+// security developments, the hr-time working group has not yet reached
+// consensus on what the recommend minimum clock resolution should be:
+// https://w3c.github.io/hr-time/#clock-resolution
+// Since setTimeout might return too early/late, our goal is for
+// performance.now() to increase before a 2 ms deadline rather than specific
+// number of setTimeout(N) invocations.
+// See bug 749894 (intermittent failures of this test)
+setTimeout(checkAfterTimeout, 1);
+
+var checks = 0;
+
+function checkAfterTimeout() {
+  checks++;
+  var d2 = Date.now();
+  var n2 = self.performance.now();
+
+  // Spin on setTimeout() until performance.now() increases. Abort the test
+  // if it runs for more than 2 ms or 50 timeouts.
+  let elapsedTime = d2 - d;
+  let elapsedPerf = n2 - n;
+  if (elapsedPerf == 0 && elapsedTime < 2 && checks < 50) {
+    setTimeout(checkAfterTimeout, 1);
+    return;
+  }
+
+  // Our implementation provides 1 ms resolution (bug 1451790), but we
+  // can't assert that elapsedPerf >= 1 ms because this worker test runs with
+  // "privacy.reduceTimerPrecision" == false so performance.now() is not
+  // limited to 1 ms resolution.
+  ok(
+    elapsedPerf > 0,
+    `Loose - the value of now() should increase after 2ms. ` +
+      `delta now(): ${elapsedPerf} ms`
+  );
+
+  // If we need more than 1 iteration, then either performance.now() resolution
+  // is shorter than 1 ms or setTimeout() is returning too early.
+  ok(
+    checks == 1,
+    `Strict - the value of now() should increase after one setTimeout. ` +
+      `iters: ${checks}, dt: ${elapsedTime}, now(): ${n2}`
+  );
+
+  workerTestDone();
+}
diff --git a/dom/performance/tests/test_worker_user_timing.html b/dom/performance/tests/test_worker_user_timing.html
new file mode 100644
index 0000000000..ebeac24e4f
--- /dev/null
+++ b/dom/performance/tests/test_worker_user_timing.html
@@ -0,0 +1,30 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Test for worker performance timing API</title>
+    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  </head>
+  <body>
+    <script class="testbody" type="text/javascript">
+
+var worker = new Worker('worker_performance_user_timing.js');
+worker.onmessage = function(event) {
+  if (event.data.type == 'finish') {
+    SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
+    SimpleTest.finish();
+  } else if (event.data.type == 'status') {
+    ok(event.data.status, event.data.msg);
+  }
+}
+
+var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
+SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
+SimpleTest.waitForExplicitFinish();
+    </script>
+  </body>
+</html>
diff --git a/dom/performance/tests/worker_performance_observer.js b/dom/performance/tests/worker_performance_observer.js
new file mode 100644
index 0000000000..3282c9d157
--- /dev/null
+++ b/dom/performance/tests/worker_performance_observer.js
@@ -0,0 +1,4 @@
+importScripts(["/resources/testharness.js"]);
+importScripts(["test_performance_observer.js"]);
+
+done();
diff --git a/dom/performance/tests/worker_performance_user_timing.js b/dom/performance/tests/worker_performance_user_timing.js
new file mode 100644
index 0000000000..257040f09f
--- /dev/null
+++ b/dom/performance/tests/worker_performance_user_timing.js
@@ -0,0 +1,32 @@
+function ok(a, msg) {
+  dump("OK: " + !!a + "  =>  " + a + " " + msg + "\n");
+  postMessage({ type: "status", status: !!a, msg: a + ": " + msg });
+}
+
+function is(a, b, msg) {
+  dump("IS: " + (a === b) + "  =>  " + a + " | " + b + " " + msg + "\n");
+  postMessage({
+    type: "status",
+    status: a === b,
+    msg: a + " === " + b + ": " + msg,
+  });
+}
+
+function isnot(a, b, msg) {
+  dump("ISNOT: " + (a === b) + "  =>  " + a + " | " + b + " " + msg + "\n");
+  postMessage({
+    type: "status",
+    status: a != b,
+    msg: a + " != " + b + ": " + msg,
+  });
+}
+
+importScripts(["test_performance_user_timing.js"]);
+
+for (var i = 0; i < steps.length; ++i) {
+  performance.clearMarks();
+  performance.clearMeasures();
+  steps[i]();
+}
+
+postMessage({ type: "finish" });