Relanding https://code.google.com/p/webrtc/source/detail?r=7093, after it got

reverted due to some internal compile failures.

In this CL changes are done in portallocator_unittest.cc, in particular to EXPECT_EQ checking in new tests.

Original patch committed in https://code.google.com/p/webrtc/source/detail?r=7093

TBR=juberti@webrtc.org
BUG=1179

Review URL: https://webrtc-codereview.appspot.com/22329004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7118 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/app/webrtc/peerconnection.cc

@@ -672,7 +672,7 @@ bool PeerConnection::UpdateIce(const RTCConfiguration& config) {
       }
     }
   }
-  return session_->UpdateIce(config.type);
+  return session_->SetIceTransports(config.type);
 }
 
 bool PeerConnection::AddIceCandidate(