diff --git a/samples/js/base/adapter.js b/samples/js/base/adapter.js
index d79586e9e..803ef150c 100644
--- a/samples/js/base/adapter.js
+++ b/samples/js/base/adapter.js
@@ -41,15 +41,24 @@ if (navigator.mozGetUserMedia) {
     if (url_parts[0].indexOf('stun') === 0) {
       // Create iceServer with stun url.
       iceServer = { 'url': url };
-    } else if (url_parts[0].indexOf('turn') === 0 &&
-               (url.indexOf('transport=udp') !== -1 ||
-                url.indexOf('?transport') === -1)) {
-      // Create iceServer with turn url.
-      // Ignore the transport parameter from TURN url.
-      var turn_url_parts = url.split("?");
-      iceServer = { 'url': turn_url_parts[0],
-                    'credential': password,
-                    'username': username };
+    } else if (url_parts[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("?");
+        // Return null for createIceServer if transport=tcp.
+        if (turn_url_parts[1].indexOf('transport=udp') === 0) {
+          iceServer = { 'url': turn_url_parts[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 };
+      }
     }
     return iceServer;
   };
@@ -90,17 +99,10 @@ if (navigator.mozGetUserMedia) {
       // Create iceServer with stun url.
       iceServer = { 'url': url };
     } else if (url_parts[0].indexOf('turn') === 0) {
-      if (webrtcDetectedVersion < 28) {
-        // For pre-M28 chrome versions use old TURN format.
-        var url_turn_parts = url.split("turn:");
-        iceServer = { 'url': 'turn:' + username + '@' + url_turn_parts[1],
-                      'credential': password };
-      } else {
-        // For Chrome M28 & above use new TURN format.
-        iceServer = { 'url': url,
-                      'credential': password,
-                      'username': username };
-      }
+      // Chrome M28 & above uses below TURN format.
+      iceServer = { 'url': url,
+                    'credential': password,
+                    'username': username };
     }
     return iceServer;
   };
@@ -128,27 +130,6 @@ if (navigator.mozGetUserMedia) {
   reattachMediaStream = function(to, from) {
     to.src = from.src;
   };
-
-  // The representation of tracks in a stream is changed in M26.
-  // Unify them for earlier Chrome versions in the coexisting period.
-  if (!webkitMediaStream.prototype.getVideoTracks) {
-    webkitMediaStream.prototype.getVideoTracks = function() {
-      return this.videoTracks;
-    };
-    webkitMediaStream.prototype.getAudioTracks = function() {
-      return this.audioTracks;
-    };
-  }
-
-  // New syntax of getXXXStreams method in M26.
-  if (!webkitRTCPeerConnection.prototype.getLocalStreams) {
-    webkitRTCPeerConnection.prototype.getLocalStreams = function() {
-      return this.localStreams;
-    };
-    webkitRTCPeerConnection.prototype.getRemoteStreams = function() {
-      return this.remoteStreams;
-    };
-  }
 } else {
   console.log("Browser does not appear to be WebRTC-capable");
 }