Add a platform implementation of QuicTest and QuicTestWithParam

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 837ef2f3703e3b8c6e042863ba3a8b97c4906447..cbb63b8e2a6fb8e2fb6598f10034f11c794091ac 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -179,14 +179,6 @@ QuicPacket* BuildUnsizedDataPacket(QuicFramer* framer,
                                    const QuicFrames& frames,
                                    size_t packet_size);
 
-// When constructed, checks that all QUIC flags have their correct default
-// values and when destructed, restores those values.
-class QuicFlagSaver {
- public:
-  QuicFlagSaver();
-  ~QuicFlagSaver();
-};
-
 // Compute SHA-1 hash of the supplied std::string.
 std::string Sha1Hash(QuicStringPiece data);