fix bug in QUIC force HOL blocking experiment, guarded by --quic_enable_version_36_v2.

net/quic/core/quic_protocol_test.cc

Index: net/quic/core/quic_protocol_test.cc
diff --git a/net/quic/core/quic_protocol_test.cc b/net/quic/core/quic_protocol_test.cc
index 1013851ff0c4fe2dbc41745c669dcf73882dbcc5..deee2839823534ca887a92545e808644752ee809 100644
--- a/net/quic/core/quic_protocol_test.cc
+++ b/net/quic/core/quic_protocol_test.cc
@@ -289,7 +289,7 @@ TEST(QuicProtocolTest, FilterSupportedVersions) {
       QUIC_VERSION_34, QUIC_VERSION_35, QUIC_VERSION_36};
 
   FLAGS_quic_enable_version_35 = false;
-  FLAGS_quic_enable_version_36 = false;
+  FLAGS_quic_enable_version_36_v2 = false;
 
   QuicVersionVector filtered_versions = FilterSupportedVersions(all_versions);
   ASSERT_EQ(5u, filtered_versions.size());
@@ -302,12 +302,12 @@ TEST(QuicProtocolTest, FilterSupportedVersions) {
 
 TEST(QuicProtocolTest, QuicVersionManager) {
   FLAGS_quic_enable_version_35 = false;
-  FLAGS_quic_enable_version_36 = false;
+  FLAGS_quic_enable_version_36_v2 = false;
   QuicVersionManager manager(AllSupportedVersions());
   EXPECT_EQ(FilterSupportedVersions(AllSupportedVersions()),
             manager.GetSupportedVersions());
   FLAGS_quic_enable_version_35 = true;
-  FLAGS_quic_enable_version_36 = true;
+  FLAGS_quic_enable_version_36_v2 = true;
   EXPECT_EQ(FilterSupportedVersions(AllSupportedVersions()),
             manager.GetSupportedVersions());
   EXPECT_EQ(QUIC_VERSION_36, manager.GetSupportedVersions()[0]);