diff --git a/quic/test_tools/quic_test_utils.h b/quic/test_tools/quic_test_utils.h
index 27ffee3..c3c29fa 100644
--- a/quic/test_tools/quic_test_utils.h
+++ b/quic/test_tools/quic_test_utils.h
@@ -951,6 +951,7 @@
                void(QuicBandwidth, QuicTime::Delta, bool));
   MOCK_METHOD1(AdjustNetworkParameters, void(const NetworkParams&));
   MOCK_METHOD1(OnApplicationLimited, void(QuicByteCount));
+  MOCK_CONST_METHOD1(PopulateConnectionStats, void(QuicConnectionStats*));
 };
 
 class MockLossAlgorithm : public LossDetectionInterface {