Remove the RC4 field trial.

components/ssl_config/ssl_config_service_manager_pref.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #include "components/ssl_config/ssl_config_service_manager.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/feature_list.h"
+#include "base/location.h"
 #include "base/macros.h"
-#include "base/metrics/field_trial.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "components/content_settings/core/browser/content_settings_utils.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "components/prefs/pref_member.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "components/ssl_config/ssl_config_prefs.h"
@@ skipping 50 matching lines @@
   if (version_str == switches::kSSLVersionTLSv1) {
     version = net::SSL_PROTOCOL_VERSION_TLS1;
   } else if (version_str == switches::kSSLVersionTLSv11) {
     version = net::SSL_PROTOCOL_VERSION_TLS1_1;
   } else if (version_str == switches::kSSLVersionTLSv12) {
     version = net::SSL_PROTOCOL_VERSION_TLS1_2;
   }
   return version;
 }
 
-bool IsRC4EnabledByDefault() {
-  const std::string group_name =
-      base::FieldTrialList::FindFullName("RC4Ciphers");
-  return base::StartsWith(group_name, "Enabled", base::CompareCase::SENSITIVE);
-}
-
 const base::Feature kSSLVersionFallbackTLSv11 {
     "SSLVersionFallbackTLSv1.1", base::FEATURE_DISABLED_BY_DEFAULT,
 };
 
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 //  SSLConfigServicePref
 
 // An SSLConfigService which stores a cached version of the current SSLConfig
@@ skipping 89 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(SSLConfigServiceManagerPref);
 };
 
 SSLConfigServiceManagerPref::SSLConfigServiceManagerPref(
     PrefService* local_state,
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner)
     : ssl_config_service_(new SSLConfigServicePref(io_task_runner)),
       io_task_runner_(io_task_runner) {
   DCHECK(local_state);
 
-  local_state->SetDefaultPrefValue(
-      ssl_config::prefs::kRC4Enabled,
-      new base::FundamentalValue(IsRC4EnabledByDefault()));
-
   // Restore the TLS 1.1 fallback leg if enabled via features.
   // TODO(davidben): Remove this when the fallback removal has succeeded.
   // https://crbug.com/536200.
   if (base::FeatureList::IsEnabled(kSSLVersionFallbackTLSv11)) {
     local_state->SetDefaultPrefValue(
         ssl_config::prefs::kSSLVersionFallbackMin,
         new base::StringValue(switches::kSSLVersionTLSv11));
   }
 
   PrefChangeRegistrar::NamedChangeCallback local_state_callback =
@@ skipping 118 matching lines @@
     PrefService* local_state,
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner) {
   return new SSLConfigServiceManagerPref(local_state, io_task_runner);
 }
 
 // static
 void SSLConfigServiceManager::RegisterPrefs(PrefRegistrySimple* registry) {
   SSLConfigServiceManagerPref::RegisterPrefs(registry);
 }
 }  // namespace ssl_config