Disconnect TLS 1.3 from base::FeatureList in M56.

components/ssl_config/ssl_config_service_manager_pref.cc

Index: components/ssl_config/ssl_config_service_manager_pref.cc
diff --git a/components/ssl_config/ssl_config_service_manager_pref.cc b/components/ssl_config/ssl_config_service_manager_pref.cc
index a870ab12a0c4aaf1ca708e6c6fe05656a788963c..46a26c575b8241ef91645f040c273ce1db62ac36 100644
--- a/components/ssl_config/ssl_config_service_manager_pref.cc
+++ b/components/ssl_config/ssl_config_service_manager_pref.cc
@@ -85,10 +85,6 @@ uint16_t SSLProtocolVersionFromString(const std::string& version_str) {
   return version;
 }
 
-const base::Feature kTLS13Feature{
-    "NegotiateTLS13", base::FEATURE_DISABLED_BY_DEFAULT,
-};
-
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -194,12 +190,6 @@ SSLConfigServiceManagerPref::SSLConfigServiceManagerPref(
       io_task_runner_(io_task_runner) {
   DCHECK(local_state);
 
-  if (base::FeatureList::IsEnabled(kTLS13Feature)) {
-    local_state->SetDefaultPrefValue(
-        ssl_config::prefs::kSSLVersionMax,
-        new base::StringValue(switches::kSSLVersionTLSv13));
-  }
-
   PrefChangeRegistrar::NamedChangeCallback local_state_callback =
       base::Bind(&SSLConfigServiceManagerPref::OnPreferenceChanged,
                  base::Unretained(this), local_state);