Now catches the error message from RTCPeerConnection and createAnswer/Offer

chrome/test/data/webrtc/manual/peerconnection_manual.js

Index: chrome/test/data/webrtc/manual/peerconnection_manual.js
diff --git a/chrome/test/data/webrtc/manual/peerconnection_manual.js b/chrome/test/data/webrtc/manual/peerconnection_manual.js
index 2ee156c0a7c976fead9ef50014fc1e1d00152d0f..a40e739d344147d7b4106a04116986d74fecb5b3 100644
--- a/chrome/test/data/webrtc/manual/peerconnection_manual.js
+++ b/chrome/test/data/webrtc/manual/peerconnection_manual.js
@@ -432,19 +432,22 @@ function handleMessage(peerConnection, message) {
     peerConnection.setRemoteDescription(
         session_description,
         function() { success_('setRemoteDescription'); },
-        function() { failure_('setRemoteDescription'); });
+        function(error) { failure_('setRemoteDescription', error); });
     if (session_description.type == 'offer') {
       print_('createAnswer with constraints: ' +
             JSON.stringify(global.createAnswerConstraints, null, ' '));
       peerConnection.createAnswer(
-        setLocalAndSendMessage_,
-        function() { failure_('createAnswer'); },
-        global.createAnswerConstraints);
+          setLocalAndSendMessage_,
+          function(error) { failure_('createAnswer', error); },
+          global.createAnswerConstraints);
     }
     return;
   } else if (parsed_msg.candidate) {
     var candidate = new RTCIceCandidate(parsed_msg);
-    peerConnection.addIceCandidate(candidate);
+    peerConnection.addIceCandidate(candidate,
+        function() { success_('addIceCandidate success'); },

[kjellander_chromium, 2014/06/10 08:55:33]

No need to put the ' success' part in here. For the other functions we've only
passed the function name. Same below for the failure_ call.

[jansson, 2014/06/10 10:08:55]

Done.

+        function(error) { failure_('addIceCandidate failed', error); }
+    );
     return;
   }
   error_('unknown message received');
@@ -470,7 +473,7 @@ function setupCall(peerConnection) {
         JSON.stringify(global.createOfferConstraints, null, ' '));
   peerConnection.createOffer(
       setLocalAndSendMessage_,
-      function() { failure_('createOffer'); },
+      function(error) { failure_('createOffer', error); },
       global.createOfferConstraints);
 }
 
@@ -892,7 +895,7 @@ function success_(method) {
 
 /** @private */
 function failure_(method, error) {
-  error_(method + '() failed: ' + error);
+  error_(method + '() failed: ' + JSON.stringify(error));
 }
 
 /** @private */
@@ -908,7 +911,7 @@ function setLocalAndSendMessage_(session_description) {
   global.peerConnection.setLocalDescription(
     session_description,
     function() { success_('setLocalDescription'); },
-    function() { failure_('setLocalDescription'); });
+    function(error) { failure_('setLocalDescription', error); });
   print_('Sending SDP message:\n' + session_description.sdp);
   sendToPeer(global.remotePeerId, JSON.stringify(session_description));
 }