Add instrumentation to track the IceEndpointType.

talk/app/webrtc/umametrics.h

Index: talk/app/webrtc/umametrics.h
diff --git a/talk/app/webrtc/umametrics.h b/talk/app/webrtc/umametrics.h
index bb9e05230d35cb0cb7dff3de24515625cd30a6f9..274a62e6ce52ee4a7ce2f8b8b42a1f4d88a09d0a 100644
--- a/talk/app/webrtc/umametrics.h
+++ b/talk/app/webrtc/umametrics.h
@@ -32,6 +32,14 @@
 
 namespace webrtc {
 
+// Used to specify which enum counter type we're incrementing in
+// MetricsObserverInterface::IncrementEnumCounter.
+enum PeerConnectionEnumCounterType {
+  kPeerConnectionEnumCounter_IceEndpointTypeUDP,
+  kPeerConnectionEnumCounter_IceEndpointTypeTCP,
+  kPeerConnectionEnumCounter_Max
+};
+
 // Currently this contains information related to WebRTC network/transport
 // information.
 
@@ -77,6 +85,28 @@ enum PeerConnectionMetricsName {
 // TODO(guoweis): Keep previous name here until all references are renamed.
 typedef PeerConnectionMetricsName PeerConnectionUMAMetricsName;
 
+// The IceEndpointType has the format of <local_endpoint>_<remote_endpoint>. It
+// is recorded on the BestConnection when we have the first OnTransportCompleted
+// signaled.
+enum IceEndpointType {
+  kIceEndpoint_Host_Host,
+  kIceEndpoint_Host_Srflx,
+  kIceEndpoint_Host_Relay,
+  kIceEndpoint_Host_Prflx,
+  kIceEndpoint_Srflx_Host,
+  kIceEndpoint_Srflx_Srflx,
+  kIceEndpoint_Srflx_Relay,
+  kIceEndpoint_Srflx_Prflx,
+  kIceEndpoint_Relay_Host,
+  kIceEndpoint_Relay_Srflx,
+  kIceEndpoint_Relay_Relay,
+  kIceEndpoint_Relay_Prflx,
+  kIceEndpoint_Prflx_Host,
+  kIceEndpoint_Prflx_Srflx,
+  kIceEndpoint_Prflx_Relay,
+  kIceEndpoint_Max
+};
+
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_UMA6METRICS_H_