diff --git a/static/js/libs/webrtc.adapter.js b/static/js/libs/webrtc.adapter.js
index b4d0629c..6f1c14af 100644
--- a/static/js/libs/webrtc.adapter.js
+++ b/static/js/libs/webrtc.adapter.js
@@ -37,117 +37,114 @@ var reattachMediaStream = null;
 var webrtcDetectedBrowser = null;
 var webrtcDetectedVersion = null;
 
-function maybeFixConfiguration(pcConfig) {
-  if (!pcConfig) {
-    return;
-  }
-  for (var i = 0; i < pcConfig.iceServers.length; i++) {
-    if (pcConfig.iceServers[i].hasOwnProperty('urls')){
-      pcConfig.iceServers[i]['url'] = pcConfig.iceServers[i]['urls'];
-      delete pcConfig.iceServers[i]['urls'];
-    }
-  }
-}
-
 if (navigator.mozGetUserMedia) {
-  console.log("This appears to be Firefox");
+  console.log('This appears to be Firefox');
 
-  webrtcDetectedBrowser = "firefox";
+  webrtcDetectedBrowser = 'firefox';
 
   webrtcDetectedVersion =
-           parseInt(navigator.userAgent.match(/Firefox\/([0-9]+)\./)[1], 10);
+    parseInt(navigator.userAgent.match(/Firefox\/([0-9]+)\./)[1], 10);
 
   // The RTCPeerConnection object.
-  var RTCPeerConnection = function(pcConfig, pcConstraints) {
+  window.RTCPeerConnection = function(pcConfig, pcConstraints) {
     // .urls is not supported in FF yet.
-    maybeFixConfiguration(pcConfig);
+    if (pcConfig && pcConfig.iceServers) {
+      for (var i = 0; i < pcConfig.iceServers.length; i++) {
+        if (pcConfig.iceServers[i].hasOwnProperty('urls')) {
+          pcConfig.iceServers[i].url = pcConfig.iceServers[i].urls;
+          delete pcConfig.iceServers[i].urls;
+        }
+      }
+    }
     return new mozRTCPeerConnection(pcConfig, pcConstraints);
-  }
+  };
 
   // The RTCSessionDescription object.
-  RTCSessionDescription = mozRTCSessionDescription;
+  window.RTCSessionDescription = mozRTCSessionDescription;
 
   // The RTCIceCandidate object.
-  RTCIceCandidate = mozRTCIceCandidate;
+  window.RTCIceCandidate = mozRTCIceCandidate;
 
-  // Get UserMedia (only difference is the prefix).
+  // getUserMedia shim (only difference is the prefix).
   // Code from Adam Barth.
   getUserMedia = navigator.mozGetUserMedia.bind(navigator);
   navigator.getUserMedia = getUserMedia;
 
-  // Creates iceServer from the url for FF.
-  createIceServer = function(url, username, password) {
+  // Shim for MediaStreamTrack.getSources.
+  MediaStreamTrack.getSources = function(successCb) {
+    setTimeout(function() {
+      var infos = [
+        {kind: 'audio', id: 'default', label:'', facing:''},
+        {kind: 'video', id: 'default', label:'', facing:''}
+      ];
+      successCb(infos);
+    }, 0);
+  };
+
+  // Creates ICE server from the URL for FF.
+  window.createIceServer = function(url, username, password) {
     var iceServer = null;
-    var url_parts = url.split(':');
-    if (url_parts[0].indexOf('stun') === 0) {
-      // Create iceServer with stun url.
-      iceServer = { 'url': url };
-    } else if (url_parts[0].indexOf('turn') === 0) {
+    var urlParts = url.split(':');
+    if (urlParts[0].indexOf('stun') === 0) {
+      // Create ICE server with STUN URL.
+      iceServer = {
+        'url': url
+      };
+    } else if (urlParts[0].indexOf('turn') === 0) {
       if (webrtcDetectedVersion < 27) {
         // Create iceServer with turn url.
         // Ignore the transport parameter from TURN url for FF version <=27.
-        var turn_url_parts = url.split("?");
+        var turnUrlParts = url.split('?');
         // Return null for createIceServer if transport=tcp.
-        if (turn_url_parts.length === 1 ||
-            turn_url_parts[1].indexOf('transport=udp') === 0) {
-          iceServer = {'url': turn_url_parts[0],
-                       'credential': password,
-                       'username': username};
+        if (turnUrlParts.length === 1 ||
+          turnUrlParts[1].indexOf('transport=udp') === 0) {
+          iceServer = {
+            'url': turnUrlParts[0],
+            'credential': password,
+            'username': username
+          };
         }
       } else {
         // FF 27 and above supports transport parameters in TURN url,
         // So passing in the full url to create iceServer.
-        iceServer = {'url': url,
-                     'credential': password,
-                     'username': username};
+        iceServer = {
+          'url': url,
+          'credential': password,
+          'username': username
+        };
       }
     }
     return iceServer;
   };
 
-  createIceServers = function(urls, username, password) {
+  window.createIceServers = function(urls, username, password) {
     var iceServers = [];
     // Use .url for FireFox.
-    for (i = 0; i < urls.length; i++) {
-      var iceServer = createIceServer(urls[i],
-                                      username,
-                                      password);
+    for (var i = 0; i < urls.length; i++) {
+      var iceServer =
+        window.createIceServer(urls[i], username, password);
       if (iceServer !== null) {
         iceServers.push(iceServer);
       }
     }
     return iceServers;
-  }
+  };
 
   // Attach a media stream to an element.
   attachMediaStream = function(element, stream) {
-    console.log("Attaching media stream");
+    console.log('Attaching media stream');
     element.mozSrcObject = stream;
-    element.play();
   };
 
   reattachMediaStream = function(to, from) {
-    console.log("Reattaching media stream");
+    console.log('Reattaching media stream');
     to.mozSrcObject = from.mozSrcObject;
-    to.play();
   };
 
-  // Fake get{Video,Audio}Tracks
-  if (!MediaStream.prototype.getVideoTracks) {
-    MediaStream.prototype.getVideoTracks = function() {
-      return [];
-    };
-  }
-
-  if (!MediaStream.prototype.getAudioTracks) {
-    MediaStream.prototype.getAudioTracks = function() {
-      return [];
-    };
-  }
 } else if (navigator.webkitGetUserMedia) {
-  console.log("This appears to be Chrome");
+  console.log('This appears to be Chrome');
 
-  webrtcDetectedBrowser = "chrome";
+  webrtcDetectedBrowser = 'chrome';
   // Temporary fix until crbug/374263 is fixed.
   // Setting Chrome version to 999, if version is unavailable.
   var result = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
@@ -158,50 +155,38 @@ if (navigator.mozGetUserMedia) {
   }
 
   // Creates iceServer from the url for Chrome M33 and earlier.
-  createIceServer = function(url, username, password) {
+  window.createIceServer = function(url, username, password) {
     var iceServer = null;
-    var url_parts = url.split(':');
-    if (url_parts[0].indexOf('stun') === 0) {
+    var urlParts = url.split(':');
+    if (urlParts[0].indexOf('stun') === 0) {
       // Create iceServer with stun url.
-      iceServer = { 'url': url };
-    } else if (url_parts[0].indexOf('turn') === 0) {
+      iceServer = {
+        'url': url
+      };
+    } else if (urlParts[0].indexOf('turn') === 0) {
       // Chrome M28 & above uses below TURN format.
-      iceServer = {'url': url,
-                   'credential': password,
-                   'username': username};
+      iceServer = {
+        'url': url,
+        'credential': password,
+        'username': username
+      };
     }
     return iceServer;
   };
 
-  // Creates iceServers from the urls for Chrome M34 and above.
-  createIceServers = function(urls, username, password) {
-    var iceServers = [];
-    if (webrtcDetectedVersion >= 34) {
-      // .urls is supported since Chrome M34.
-      iceServers = [{'urls': urls,
-                    'credential': password,
-                    'username': username }];
-    } else {
-      for (i = 0; i < urls.length; i++) {
-        var iceServer = createIceServer(urls[i],
-                                        username,
-                                        password);
-        if (iceServer !== null) {
-          iceServers.push(iceServer);
-        }
-      }
-    }
-    return iceServers;
+  // Creates an ICEServer object from multiple URLs.
+  window.createIceServers = function(urls, username, password) {
+    return {
+      'urls': urls,
+      'credential': password,
+      'username': username
+    };
   };
 
   // The RTCPeerConnection object.
-  var RTCPeerConnection = function(pcConfig, pcConstraints) {
-    // .urls is supported since Chrome M34.
-    if (webrtcDetectedVersion < 34) {
-      maybeFixConfiguration(pcConfig);
-    }
+  RTCPeerConnection = function(pcConfig, pcConstraints) {
     return new webkitRTCPeerConnection(pcConfig, pcConstraints);
-  }
+  };
 
   // Get UserMedia (only difference is the prefix).
   // Code from Adam Barth.
@@ -225,5 +210,5 @@ if (navigator.mozGetUserMedia) {
     to.src = from.src;
   };
 } else {
-  console.log("Browser does not appear to be WebRTC-capable");
+  console.log('Browser does not appear to be WebRTC-capable');
 }