gfe-relnote: (n/a) Change SetQuicFlag to take the flag variable directly instead of a pointer to it. Refactor for Envoy integration, no behavior change.

This is needed for Envoy integration because the current syntax(SetQuicFlag(&FLAG_foo)) requires FLAG_foo is a valid c++ identifier, which is not the case in Envoy.

PiperOrigin-RevId: 246196929
Change-Id: I7d56b23f0fa51fcdd17acc0837508710316a6826
diff --git a/quic/core/quic_connection_test.cc b/quic/core/quic_connection_test.cc
index fe74768..85ec46b 100644
--- a/quic/core/quic_connection_test.cc
+++ b/quic/core/quic_connection_test.cc
@@ -868,7 +868,7 @@
 // Constructs various test permutations.
 std::vector<TestParams> GetTestParams() {
   QuicFlagSaver flags;
-  SetQuicFlag(&FLAGS_quic_supports_tls_handshake, true);
+  SetQuicFlag(FLAGS_quic_supports_tls_handshake, true);
   std::vector<TestParams> params;
   ParsedQuicVersionVector all_supported_versions = AllSupportedVersions();
   for (size_t i = 0; i < all_supported_versions.size(); ++i) {
@@ -928,7 +928,7 @@
         packet_number_length_(PACKET_4BYTE_PACKET_NUMBER),
         connection_id_included_(CONNECTION_ID_PRESENT),
         notifier_(&connection_) {
-    SetQuicFlag(&FLAGS_quic_supports_tls_handshake, true);
+    SetQuicFlag(FLAGS_quic_supports_tls_handshake, true);
     connection_.set_defer_send_in_response_to_packets(GetParam().ack_response ==
                                                       AckResponse::kDefer);
     QuicFramerPeer::SetLastSerializedConnectionId(