Revert of Reland "[Chromecast] Use base::FeatureList to control features."

chromecast/browser/pref_service_helper.cc

 // Copyright 2014 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 "chromecast/browser/pref_service_helper.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 35 matching lines @@
   registry->RegisterBooleanPref(prefs::kEnableRemoteDebugging, false);
   registry->RegisterBooleanPref(prefs::kMetricsIsNewClientID, false);
   // Opt-in stats default to true to handle two different cases:
   //  1) Any crashes or UMA logs are recorded prior to setup completing
   //     successfully (even though we can't send them yet).  Unless the user
   //     ends up actually opting out, we don't want to lose this data once
   //     we get network connectivity and are able to send it.  If the user
   //     opts out, nothing further will be sent (honoring the user's setting).
   //  2) Dogfood users (see dogfood agreement).
   registry->RegisterBooleanPref(prefs::kOptInStats, true);
-  registry->RegisterListPref(prefs::kActiveDCSExperiments);
-  registry->RegisterDictionaryPref(prefs::kLatestDCSFeatures);
 
   RegisterPlatformPrefs(registry);
 
   PrefServiceFactory prefServiceFactory;
   scoped_refptr<base::SequencedTaskRunner> task_runner =
       JsonPrefStore::GetTaskRunnerForFile(
           config_path,
           content::BrowserThread::GetBlockingPool());
   prefServiceFactory.SetUserPrefsFile(config_path, task_runner.get());
   prefServiceFactory.set_async(false);
@@ skipping 10 matching lines @@
                << config_path.value()
                << ", pref_error=" << prefs_read_error;
   }
 
   OnPrefsLoaded(pref_service.get());
   return pref_service;
 }
 
 }  // namespace shell
 }  // namespace chromecast