Doing a best-effort attempt to send connection close packet for open

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 85fde6860c976b9995b00abf660426e7534ca2da..7007cdc2f6f47a4f97ff267c5fbc8c04e1396223 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -41,6 +41,14 @@ QuicVersion QuicVersionMin();
 // Returns an address for 127.0.0.1.
 IPAddressNumber Loopback4();
 
+// Create an encrypted packet for testing.
+QuicEncryptedPacket* ConstructEncryptedPacket(
+    QuicConnectionId connection_id,
+    bool version_flag,
+    bool reset_flag,
+    QuicPacketSequenceNumber sequence_number,
+    const std::string& data);
+
 void CompareCharArraysWithHexError(const std::string& description,
                                    const char* actual,
                                    const int actual_len,
@@ -296,6 +304,8 @@ class MockConnection : public QuicConnection {
   MOCK_METHOD1(SendConnectionClose, void(QuicErrorCode error));
   MOCK_METHOD2(SendConnectionCloseWithDetails, void(QuicErrorCode error,
                                                     const string& details));
+  MOCK_METHOD2(SendConnectionClosePacket, void(QuicErrorCode error,
+                                               const string& details));
   MOCK_METHOD3(SendRstStream, void(QuicStreamId id,
                                    QuicRstStreamErrorCode error,
                                    QuicStreamOffset bytes_written));