Add instrumentation to track the IceEndpointType.

talk/app/webrtc/objc/RTCEnumConverter.mm

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 30 matching lines @@
     case webrtc::PeerConnectionInterface::kIceConnectionConnected:
       return RTCICEConnectionConnected;
     case webrtc::PeerConnectionInterface::kIceConnectionCompleted:
       return RTCICEConnectionCompleted;
     case webrtc::PeerConnectionInterface::kIceConnectionFailed:
       return RTCICEConnectionFailed;
     case webrtc::PeerConnectionInterface::kIceConnectionDisconnected:
       return RTCICEConnectionDisconnected;
     case webrtc::PeerConnectionInterface::kIceConnectionClosed:
       return RTCICEConnectionClosed;
+    case webrtc::PeerConnectionInterface::kIceConnectionMax:
+      NSAssert(NO, @"kIceConnectionMax not allowed");
+      return RTCICEConnectionMax;
   }
 }
 
 + (RTCICEGatheringState)convertIceGatheringStateToObjC:
     (webrtc::PeerConnectionInterface::IceGatheringState)nativeState {
   switch (nativeState) {
     case webrtc::PeerConnectionInterface::kIceGatheringNew:
       return RTCICEGatheringNew;
     case webrtc::PeerConnectionInterface::kIceGatheringGathering:
       return RTCICEGatheringGathering;
@@ skipping 158 matching lines @@
         (RTCTcpCandidatePolicy)tcpCandidatePolicy {
   switch (tcpCandidatePolicy) {
     case kRTCTcpCandidatePolicyEnabled:
       return webrtc::PeerConnectionInterface::kTcpCandidatePolicyEnabled;
     case kRTCTcpCandidatePolicyDisabled:
       return webrtc::PeerConnectionInterface::kTcpCandidatePolicyDisabled;
   }
 }
 
 @end