Remove connection_option RVCM such that IETF QUIC connection migration is default on.

We need more stats from AFE teams to verify the corresponding flag but it is good to exercise this flag early in the GFE canary.

Protected by FLAGS_quic_reloadable_flag_quic_remove_connection_migration_connection_option_v2.

PiperOrigin-RevId: 440432966
diff --git a/quiche/quic/core/quic_connection_test.cc b/quiche/quic/core/quic_connection_test.cc
index d7b722c..cce10e7 100644
--- a/quiche/quic/core/quic_connection_test.cc
+++ b/quiche/quic/core/quic_connection_test.cc
@@ -1306,7 +1306,7 @@
     if (perspective == Perspective::IS_SERVER) {
       QuicConfig config;
       if (!GetQuicReloadableFlag(
-              quic_remove_connection_migration_connection_option)) {
+              quic_remove_connection_migration_connection_option_v2)) {
         QuicTagVector connection_options;
         connection_options.push_back(kRVCM);
         config.SetInitialReceivedConnectionOptions(connection_options);
@@ -14116,7 +14116,7 @@
 TEST_P(QuicConnectionTest,
        PathValidationFailedOnClientDueToLackOfServerConnectionId) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
     connection_.SetFromConfig(config);
@@ -14144,7 +14144,7 @@
 TEST_P(QuicConnectionTest,
        PathValidationFailedOnClientDueToLackOfClientConnectionIdTheSecondTime) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     config.SetConnectionOptionsToSend({kRVCM});
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
@@ -14235,7 +14235,7 @@
 
 TEST_P(QuicConnectionTest, ServerConnectionIdRetiredUponPathValidationFailure) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     config.SetConnectionOptionsToSend({kRVCM});
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
@@ -14285,7 +14285,7 @@
 TEST_P(QuicConnectionTest,
        MigratePathDirectlyFailedDueToLackOfServerConnectionId) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     config.SetConnectionOptionsToSend({kRVCM});
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
@@ -14308,7 +14308,7 @@
 TEST_P(QuicConnectionTest,
        MigratePathDirectlyFailedDueToLackOfClientConnectionIdTheSecondTime) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     config.SetConnectionOptionsToSend({kRVCM});
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
@@ -14627,7 +14627,7 @@
 
 TEST_P(QuicConnectionTest, ServerRetireSelfIssuedConnectionId) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     config.SetConnectionOptionsToSend({kRVCM});
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));
@@ -15076,7 +15076,7 @@
 
 TEST_P(QuicConnectionTest, AckElicitingFrames) {
   if (!GetQuicReloadableFlag(
-          quic_remove_connection_migration_connection_option)) {
+          quic_remove_connection_migration_connection_option_v2)) {
     QuicConfig config;
     config.SetConnectionOptionsToSend({kRVCM});
     EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _));