Add instrumentation to track the IceEndpointType.

webrtc/p2p/base/port.cc

Index: webrtc/p2p/base/port.cc
diff --git a/webrtc/p2p/base/port.cc b/webrtc/p2p/base/port.cc
index 4023b322e732ef31e6827bd3fc95715351fc2f22..fe2bf0f23852bca84d6c6635fac31425ad563a8e 100644
--- a/webrtc/p2p/base/port.cc
+++ b/webrtc/p2p/base/port.cc
@@ -249,6 +249,7 @@ void Port::AddAddress(const rtc::SocketAddress& address,
                       const rtc::SocketAddress& base_address,
                       const rtc::SocketAddress& related_address,
                       const std::string& protocol,
+                      const std::string& first_hop_protocol,
                       const std::string& tcptype,
                       const std::string& type,
                       uint32 type_preference,
@@ -263,6 +264,7 @@ void Port::AddAddress(const rtc::SocketAddress& address,
   c.set_component(component_);
   c.set_type(type);
   c.set_protocol(protocol);
+  c.set_first_hop_protocol(first_hop_protocol);
   c.set_tcptype(tcptype);
   c.set_address(address);
   c.set_priority(c.GetPriority(type_preference, network_->preference(),