diff --git a/b2g/chrome/content/test/mochitest/RecordingStatusChromeScript.js b/b2g/chrome/content/test/mochitest/RecordingStatusChromeScript.js
new file mode 100644
index 000000000000..48f8bd550b19
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/RecordingStatusChromeScript.js
@@ -0,0 +1,40 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
+const { Services } = Cu.import('resource://gre/modules/Services.jsm');
+
+var processId;
+
+function peekChildId(aSubject, aTopic, aData) {
+  Services.obs.removeObserver(peekChildId, 'recording-device-events');
+  Services.obs.removeObserver(peekChildId, 'recording-device-ipc-events');
+  let props = aSubject.QueryInterface(Ci.nsIPropertyBag2);
+  if (props.hasKey('childID')) {
+    processId = props.get('childID');
+  }
+}
+
+addMessageListener('init-chrome-event', function(message) {
+  // listen mozChromeEvent and forward to content process.
+  let browser = Services.wm.getMostRecentWindow('navigator:browser');
+  let type = message.type;
+  browser.addEventListener('mozChromeEvent', function(event) {
+    let details = event.detail;
+    if (details.type === type) {
+      sendAsyncMessage('chrome-event', details);
+    }
+  }, true);
+
+  Services.obs.addObserver(peekChildId, 'recording-device-events', false);
+  Services.obs.addObserver(peekChildId, 'recording-device-ipc-events', false);
+});
+
+addMessageListener('fake-content-shutdown', function(message) {
+    let props = Cc["@mozilla.org/hash-property-bag;1"]
+                  .createInstance(Ci.nsIWritablePropertyBag2);
+    if (processId) {
+      props.setPropertyAsUint64('childID', processId);
+    }
+    Services.obs.notifyObservers(props, 'recording-device-ipc-events', 'content-shutdown');
+});
diff --git a/b2g/chrome/content/test/mochitest/RecordingStatusHelper.js b/b2g/chrome/content/test/mochitest/RecordingStatusHelper.js
new file mode 100644
index 000000000000..5e3e6814e1fd
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/RecordingStatusHelper.js
@@ -0,0 +1,82 @@
+'use strict';
+
+// resolve multiple promise in parallel
+function expectAll(aValue) {
+  let deferred = new Promise(function(resolve, reject) {
+    let countdown = aValue.length;
+    let resolutionValues = new Array(countdown);
+
+    for (let i = 0; i < aValue.length; i++) {
+      let index = i;
+      aValue[i].then(function(val) {
+        resolutionValues[index] = val;
+        if (--countdown === 0) {
+          resolve(resolutionValues);
+        }
+      }, reject);
+    }
+  });
+
+  return deferred;
+}
+
+function TestInit() {
+  let url = SimpleTest.getTestFileURL("RecordingStatusChromeScript.js")
+  let script = SpecialPowers.loadChromeScript(url);
+
+  let helper = {
+    finish: function () {
+      script.destroy();
+    },
+    fakeShutdown: function () {
+      script.sendAsyncMessage('fake-content-shutdown', {});
+    }
+  };
+
+  script.addMessageListener('chrome-event', function (message) {
+    if (helper.hasOwnProperty('onEvent')) {
+      helper.onEvent(message);
+    } else {
+      ok(false, 'unexpected message: ' + JSON.stringify(message));
+    }
+  });
+
+  script.sendAsyncMessage("init-chrome-event", {
+    type: 'recording-status'
+  });
+
+  return Promise.resolve(helper);
+}
+
+function expectEvent(expected, eventHelper) {
+  return new Promise(function(resolve, reject) {
+    eventHelper.onEvent = function(message) {
+      delete eventHelper.onEvent;
+      ok(message, JSON.stringify(message));
+      is(message.type, 'recording-status', 'event type: ' + message.type);
+      is(message.active, expected.active, 'recording active: ' + message.active);
+      is(message.isAudio, expected.isAudio, 'audio recording active: ' + message.isAudio);
+      is(message.isVideo, expected.isVideo, 'video recording active: ' + message.isVideo);
+      resolve(eventHelper);
+    };
+    info('waiting for recording-status');
+  });
+}
+
+function expectStream(params, callback) {
+  return new Promise(function(resolve, reject) {
+    var req = navigator.mozGetUserMedia(
+      params,
+      function(stream) {
+        ok(true, 'create media stream');
+        callback(stream);
+        resolve();
+      },
+      function(err) {
+        ok(false, 'fail to create media stream');
+        reject(err);
+      }
+    );
+    info('waiting for gUM result');
+  });
+}
diff --git a/b2g/chrome/content/test/mochitest/file_getusermedia_iframe.html b/b2g/chrome/content/test/mochitest/file_getusermedia_iframe.html
new file mode 100644
index 000000000000..f2b18eab3f42
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/file_getusermedia_iframe.html
@@ -0,0 +1,36 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Iframe for Recording Status</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript;version=1.7" src="RecordingStatusHelper.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+
+<pre id="test">
+<script class="testbody" type="text/javascript;version=1.7">
+
+var localStream;
+
+window.addEventListener('message', function(event) {
+  switch (event.data) {
+    case 'start':
+      let gumDeferred = expectStream({ audio: true,
+                                       fake: true
+                                     }, function(stream) {
+                                       localStream = stream;
+                                       event.source.postMessage('start-finished', window.location.origin);
+                                     });
+      break;
+    case 'stop':
+      localStream.stop();
+      localStream = null;
+      break;
+  }
+}, false);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/b2g/chrome/content/test/mochitest/mochitest.ini b/b2g/chrome/content/test/mochitest/mochitest.ini
new file mode 100644
index 000000000000..a9160bca7c53
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/mochitest.ini
@@ -0,0 +1,10 @@
+[DEFAULT]
+support-files =
+  RecordingStatusChromeScript.js
+  RecordingStatusHelper.js
+  file_getusermedia_iframe.html
+
+[test_recordingStatus_basic.html]
+[test_recordingStatus_multiple_requests.html]
+[test_recordingStatus_iframe.html]
+[test_recordingStatus_kill_content_process.html]
diff --git a/b2g/chrome/content/test/mochitest/moz.build b/b2g/chrome/content/test/mochitest/moz.build
new file mode 100644
index 000000000000..8421b15157a7
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/moz.build
@@ -0,0 +1,7 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+MOCHITEST_MANIFESTS += ['mochitest.ini']
diff --git a/b2g/chrome/content/test/mochitest/test_recordingStatus_basic.html b/b2g/chrome/content/test/mochitest/test_recordingStatus_basic.html
new file mode 100644
index 000000000000..9bc6b18038f2
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/test_recordingStatus_basic.html
@@ -0,0 +1,121 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Recording Status</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript;version=1.7" src="RecordingStatusHelper.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+
+<pre id="test">
+<script class="testbody" type="text/javascript;version=1.7">
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+
+function test() {
+  let localStreams = [];
+  TestInit().then(function(eventHelper) {
+    /* step 1: create one audio stream
+     * expect: see one mozChromeEvent for audio recording start.
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ audio: true,
+                                     fake: true
+                                   }, function(stream) {
+                                     localStreams.push(stream);
+                                   });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 2: close the audio stream
+     * expect: see one mozChromeEvent for recording stop.
+     */
+    let eventDeferred = expectEvent({ active: false,
+                                      isAudio: false,
+                                      isVideo: false,
+                                    }, eventHelper);
+
+    localStreams.shift().stop();
+    info('stop audio stream');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    /* step 3: create one video stream
+     * expect: see one mozChromeEvent for video recording start
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: false,
+                                      isVideo: true
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ video: true,
+                                     fake: true
+                                   }, function(stream) {
+                                     localStreams.push(stream);
+                                   });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 4: close the audio stream
+     * expect: see one mozChromeEvent for recording stop.
+     */
+    let eventDeferred = expectEvent({ active: false,
+                                      isAudio: false,
+                                      isVideo: false,
+                                    }, eventHelper);
+
+    localStreams.shift().stop();
+    info('stop video stream');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    /* step 3: create one audio/video stream
+     * expect: see one mozChromeEvent for audio/video recording start
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: true
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ audio: true,
+                                     video: true,
+                                     fake: true
+                                   }, function(stream) {
+                                     localStreams.push(stream);
+                                   });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 4: close the audio stream
+     * expect: see one mozChromeEvent for recording stop.
+     */
+    let eventDeferred = expectEvent({ active: false,
+                                      isAudio: false,
+                                      isVideo: false,
+                                    }, eventHelper);
+
+    localStreams.shift().stop();
+    info('stop audio/video stream');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    eventHelper.finish();
+    SimpleTest.finish();
+  });
+}
+
+// ensure Promise API is enabled
+SpecialPowers.pushPrefEnv({
+  "set": [
+    ["dom.promise.enabled", true],
+    ['media.navigator.permission.disabled', true]
+  ]
+}, test);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/b2g/chrome/content/test/mochitest/test_recordingStatus_iframe.html b/b2g/chrome/content/test/mochitest/test_recordingStatus_iframe.html
new file mode 100644
index 000000000000..c7987eeae64e
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/test_recordingStatus_iframe.html
@@ -0,0 +1,73 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Recording Status in iframe</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript;version=1.7" src="RecordingStatusHelper.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+
+<pre id="test">
+<iframe id="gum-iframe"></iframe>
+<script class="testbody" type="text/javascript;version=1.7">
+SimpleTest.waitForExplicitFinish();
+
+function test() {
+  TestInit().then(function(eventHelper) {
+    /* step 1: load iframe whilch creates audio stream
+     * expect: see one mozChromeEvent for audio recording start.
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    let loadDeferred = new Promise(function(resolve, reject) {
+      let gumIframe = document.getElementById('gum-iframe');
+      gumIframe.src = 'file_getusermedia_iframe.html';
+
+      window.addEventListener('message', function(event) {
+        if (event.data === 'start-finished') {
+          resolve();
+        }
+      }, false);
+
+      gumIframe.onload = function() {
+        info('start audio stream in iframe');
+        gumIframe.contentWindow.postMessage('start', window.location.origin);
+      };
+    });
+
+    return expectAll([eventDeferred, loadDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 2: close the audio stream
+     * expect: see one mozChromeEvent for recording stop.
+     */
+    let eventDeferred = expectEvent({ active: false,
+                                      isAudio: false,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    let win = document.getElementById('gum-iframe').contentWindow;
+    win.postMessage('stop', window.location.origin);
+    info('stop audio stream in iframe');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    eventHelper.finish();
+    SimpleTest.finish();
+  });
+}
+
+// ensure Promise API is enabled
+SpecialPowers.pushPrefEnv({
+  "set": [
+    ["dom.promise.enabled", true],
+    ['media.navigator.permission.disabled', true]
+  ]
+}, test);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/b2g/chrome/content/test/mochitest/test_recordingStatus_kill_content_process.html b/b2g/chrome/content/test/mochitest/test_recordingStatus_kill_content_process.html
new file mode 100644
index 000000000000..bef89159b719
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/test_recordingStatus_kill_content_process.html
@@ -0,0 +1,74 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Recording Status after process shutdown</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript;version=1.7" src="RecordingStatusHelper.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+
+<pre id="test">
+<script class="testbody" type="text/javascript;version=1.7">
+SimpleTest.waitForExplicitFinish();
+
+function test() {
+  let localStreams = [];
+  TestInit().then(function(eventHelper) {
+    /* step 1: load iframe whilch creates audio stream
+     * expect: see one mozChromeEvent for audio recording start.
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ audio: true,
+                                     fake: true
+                                   }, function(stream) { localStreams.push(stream); });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 2: create video stream
+     * expect: see one mozChromeEvent for audio recording start.
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: true
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ video: true,
+                                     fake: true
+                                   }, function(stream) { localStreams.push(stream); });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 3: close the audio stream
+     * expect: see one mozChromeEvent for recording stop.
+     */
+    let eventDeferred = expectEvent({ active: false,
+                                      isAudio: false,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    eventHelper.fakeShutdown();
+    info('simulate content process been killed');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    eventHelper.finish();
+    SimpleTest.finish();
+  });
+}
+
+// ensure Promise API is enabled
+SpecialPowers.pushPrefEnv({
+  "set": [
+    ["dom.promise.enabled", true],
+    ['media.navigator.permission.disabled', true]
+  ]
+}, test);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/b2g/chrome/content/test/mochitest/test_recordingStatus_multiple_requests.html b/b2g/chrome/content/test/mochitest/test_recordingStatus_multiple_requests.html
new file mode 100644
index 000000000000..b4367fa649e9
--- /dev/null
+++ b/b2g/chrome/content/test/mochitest/test_recordingStatus_multiple_requests.html
@@ -0,0 +1,110 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Recording Status with multiple gUM requests</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript;version=1.7" src="RecordingStatusHelper.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+
+<pre id="test">
+<script class="testbody" type="text/javascript;version=1.7">
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+
+function test() {
+  let localStreams = [];
+  TestInit().then(function(eventHelper) {
+    /* step 1: create one audio stream
+     * expect: see one mozChromeEvent for recording start.
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ audio: true,
+                                     fake: true
+                                   }, function(stream) {
+                                     localStreams.push(stream);
+                                   });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 2: create another audio stream
+     * expect: no mozChromeEvent after audio stream is created
+     */
+    let gumDeferred = expectStream({ audio: true,
+                                     fake: true
+                                   }, function(stream) {
+                                     localStreams.push(stream);
+                                   });
+
+    return expectAll([Promise.resolve(eventHelper), gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 3: create video stream
+     * expect: see one mozChromeEvent for recording start
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: true,
+                                      isVideo: true
+                                    }, eventHelper);
+
+    let gumDeferred = expectStream({ video: true,
+                                     fake: true
+                                    }, function(stream) {
+                                      localStreams.push(stream);
+                                    });
+
+    return expectAll([eventDeferred, gumDeferred]);
+  }).then(function([eventHelper]) {
+    /* step 4: stop first audio stream
+     * expect: no mozChromeEvent after first audio stream is stopped
+     */
+    localStreams.shift().stop();
+    info('stop the first audio stream');
+    return Promise.resolve(eventHelper);
+  }).then(function(eventHelper) {
+    /* step 5: stop the second audio stream
+     * expect: see one mozChromeEvent for audio recording stop.
+     */
+    let eventDeferred = expectEvent({ active: true,
+                                      isAudio: false,
+                                      isVideo: true
+                                    }, eventHelper);
+
+    localStreams.shift().stop();
+    info('stop the second audio stream');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    /* step 6: stop the video stream
+     * expect: see one mozChromeEvent for video recording stop.
+     */
+    let eventDeferred = expectEvent({ active: false,
+                                      isAudio: false,
+                                      isVideo: false
+                                    }, eventHelper);
+
+    localStreams.shift().stop();
+    info('stop the video stream');
+    return eventDeferred;
+  }).then(function(eventHelper) {
+    eventHelper.finish();
+    SimpleTest.finish();
+  });
+}
+
+// ensure Promise API is enabled
+SpecialPowers.pushPrefEnv({
+  "set": [
+    ["dom.promise.enabled", true],
+    ['media.navigator.permission.disabled', true]
+  ]
+}, test);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/b2g/chrome/moz.build b/b2g/chrome/moz.build
index bea69e096ae5..9d39af7ef428 100644
--- a/b2g/chrome/moz.build
+++ b/b2g/chrome/moz.build
@@ -8,4 +8,6 @@ DEFINES['AB_CD'] = CONFIG['MOZ_UI_LOCALE']
 DEFINES['PACKAGE'] = 'browser'
 DEFINES['MOZ_APP_VERSION'] = CONFIG['MOZ_APP_VERSION']
 
-JAR_MANIFESTS += ['jar.mn']
\ No newline at end of file
+JAR_MANIFESTS += ['jar.mn']
+
+TEST_DIRS += ['content/test/mochitest']
diff --git a/testing/mochitest/b2g-desktop.json b/testing/mochitest/b2g-desktop.json
index a77ed2766075..f13dfaa5ee26 100644
--- a/testing/mochitest/b2g-desktop.json
+++ b/testing/mochitest/b2g-desktop.json
@@ -9,6 +9,7 @@
     "toolkit/devtools/apps": ""
   },
 "excludetests": {
+    "b2g/chrome/content/test/mochitest": "require OOP support for mochitest-b2g-desktop, Bug 957554",
     "content/xul":"tests that use xul",
     "layout/xul" : "",
     "dom/tests/mochitest/general/test_focusrings.xul":"",