Add more IceCandidatePairType for host-host CandidatePair

talk/app/webrtc/umametrics.h

 /*
  * libjingle
  * Copyright 2014 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 77 matching lines @@
 };
 
 // TODO(guoweis): Keep previous name here until all references are renamed.
 typedef PeerConnectionMetricsName PeerConnectionUMAMetricsName;
 
 // The IceCandidatePairType has the format of
 // <local_candidate_type>_<remote_candidate_type>. It is recorded based on the
 // type of candidate pair used when the PeerConnection first goes to a completed
 // state. When BUNDLE is enabled, only the first transport gets recorded.
 enum IceCandidatePairType {
+  // HostHost is deprecated. It was replaced with the set of types at the bottom
+  // to report private or public host IP address.
   kIceCandidatePairHostHost,
   kIceCandidatePairHostSrflx,
   kIceCandidatePairHostRelay,
   kIceCandidatePairHostPrflx,
   kIceCandidatePairSrflxHost,
   kIceCandidatePairSrflxSrflx,
   kIceCandidatePairSrflxRelay,
   kIceCandidatePairSrflxPrflx,
   kIceCandidatePairRelayHost,
   kIceCandidatePairRelaySrflx,
   kIceCandidatePairRelayRelay,
   kIceCandidatePairRelayPrflx,
   kIceCandidatePairPrflxHost,
   kIceCandidatePairPrflxSrflx,
   kIceCandidatePairPrflxRelay,
+
+  // The following 4 types tell whether local and remote hosts have private or
+  // public IP addresses.
+  kIceCandidatePairHostPrivateHostPrivate,
+  kIceCandidatePairHostPrivateHostPublic,
+  kIceCandidatePairHostPublicHostPrivate,
+  kIceCandidatePairHostPublicHostPublic,
   kIceCandidatePairMax
 };
 
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_UMAMETRICS_H_