Add more IceCandidatePairType for host-host CandidatePair

talk/app/webrtc/webrtcsession_unittest.cc

Index: talk/app/webrtc/webrtcsession_unittest.cc
diff --git a/talk/app/webrtc/webrtcsession_unittest.cc b/talk/app/webrtc/webrtcsession_unittest.cc
index 0322eff196925def05b175c74dba6e729ec3d336..582bdc63565e778b11844c4d252dbe24f9643154 100644
--- a/talk/app/webrtc/webrtcsession_unittest.cc
+++ b/talk/app/webrtc/webrtcsession_unittest.cc
@@ -1043,6 +1043,10 @@ class WebRtcSessionTest
       EXPECT_EQ(metrics_observer->GetEnumCounter(
                     webrtc::kEnumCounterIceCandidatePairTypeUdp,
                     webrtc::kIceCandidatePairHostHost),
+                0);
+      EXPECT_EQ(metrics_observer->GetEnumCounter(
+                    webrtc::kEnumCounterIceCandidatePairTypeUdp,
+                    webrtc::kIceCandidatePairHostPublicHostPublic),
                 1);
     }
   };