Add GetDebugState() in SendAlgorithmInterface().

net/quic/test_tools/quic_test_utils.h

Index: net/quic/test_tools/quic_test_utils.h
diff --git a/net/quic/test_tools/quic_test_utils.h b/net/quic/test_tools/quic_test_utils.h
index edf176ee287117fb9f2ac6c219919e8f184c006b..f7d148d0667a52c6e7f1f52a898f62caaf31d2af 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -750,6 +750,7 @@ class MockSendAlgorithm : public SendAlgorithmInterface {
   MOCK_METHOD1(OnRttUpdated, void(QuicPacketNumber));
   MOCK_CONST_METHOD0(RetransmissionDelay, QuicTime::Delta(void));
   MOCK_CONST_METHOD0(GetCongestionWindow, QuicByteCount());
+  MOCK_CONST_METHOD0(GetDebugState, std::string());
   MOCK_CONST_METHOD0(InSlowStart, bool());
   MOCK_CONST_METHOD0(InRecovery, bool());
   MOCK_CONST_METHOD0(GetSlowStartThreshold, QuicByteCount());
@@ -938,6 +939,7 @@ class MockSentPacketManager : public QuicSentPacketManagerInterface {
                      QuicPacketCount(QuicByteCount));
   MOCK_CONST_METHOD0(GetCongestionWindowInBytes, QuicByteCount(void));
   MOCK_CONST_METHOD0(GetSlowStartThresholdInTcpMss, QuicPacketCount(void));
+  MOCK_CONST_METHOD0(GetDebugState, std::string());
   MOCK_METHOD1(CancelRetransmissionsForStream, void(QuicStreamId));
   MOCK_METHOD2(OnConnectionMigration, void(QuicPathId, PeerAddressChangeType));
   MOCK_CONST_METHOD0(IsHandshakeConfirmed, bool(void));