Add instrumentation to track the IceEndpointType.

webrtc/p2p/client/connectivitychecker_unittest.cc

Index: webrtc/p2p/client/connectivitychecker_unittest.cc
diff --git a/webrtc/p2p/client/connectivitychecker_unittest.cc b/webrtc/p2p/client/connectivitychecker_unittest.cc
index 71c848397d14fda379ab53b30d29a003ea10c6da..d590a7206fb0c0eb5544237c15d94921844e33f5 100644
--- a/webrtc/p2p/client/connectivitychecker_unittest.cc
+++ b/webrtc/p2p/client/connectivitychecker_unittest.cc
@@ -81,7 +81,7 @@ class FakeStunPort : public StunPort {
   // Just set external address and signal that we are done.
   virtual void PrepareAddress() {
     AddAddress(kExternalAddr, kExternalAddr, rtc::SocketAddress(), "udp", "",
-               STUN_PORT_TYPE, ICE_TYPE_PREFERENCE_SRFLX, 0, true);
+               "", STUN_PORT_TYPE, ICE_TYPE_PREFERENCE_SRFLX, 0, true);
     SignalPortComplete(this);
   }
 };