Add class QuicMultipathReceivedPacketManager (not in use currently).

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 feb59124ff645c095f02965e88ad12fba169b946..cb81a79304578dbfcfa31c6d087bf26dbc65be90 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -756,6 +756,24 @@ class MockQuicConnectionDebugVisitor : public QuicConnectionDebugVisitor {
                void(const QuicPacketHeader&, StringPiece payload));
 };
 
+class MockReceivedPacketManager : public QuicReceivedPacketManager {
+ public:
+  explicit MockReceivedPacketManager(QuicConnectionStats* stats);
+  ~MockReceivedPacketManager() override;
+
+  MOCK_METHOD3(RecordPacketReceived,
+               void(QuicByteCount bytes,
+                    const QuicPacketHeader& header,
+                    QuicTime receipt_time));
+  MOCK_METHOD1(RecordPacketRevived, void(QuicPacketNumber packet_number));
+  MOCK_METHOD1(IsMissing, bool(QuicPacketNumber packet_number));
+  MOCK_METHOD1(IsAwaitingPacket, bool(QuicPacketNumber packet_number));
+  MOCK_METHOD1(UpdatePacketInformationSentByPeer,
+               void(const QuicStopWaitingFrame& stop_waiting));
+  MOCK_CONST_METHOD0(HasNewMissingPackets, bool(void));
+  MOCK_CONST_METHOD0(ack_frame_updated, bool(void));
+};
+
 // Creates a client session for testing.
 //
 // server_id: The server id associated with this stream.