Supervised user SafeSites: Add a field trial to turn on/off

chrome/browser/supervised_user/child_accounts/child_account_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SUPERVISED_USER_CHILD_ACCOUNTS_CHILD_ACCOUNT_SERVICE_H_
 #define CHROME_BROWSER_SUPERVISED_USER_CHILD_ACCOUNTS_CHILD_ACCOUNT_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 85 matching lines @@
   void ScheduleNextStatusFlagUpdate(base::TimeDelta delay);
 
   void PropagateChildStatusToUser(bool is_child);
 
   void SetFirstCustodianPrefs(const FamilyInfoFetcher::FamilyMember& custodian);
   void SetSecondCustodianPrefs(
       const FamilyInfoFetcher::FamilyMember& custodian);
   void ClearFirstCustodianPrefs();
   void ClearSecondCustodianPrefs();
 
-  void EnableExperimentalFiltering();
-
   // Owns us via the KeyedService mechanism.
   Profile* profile_;
 
   bool active_;
 
   // The user for which we are currently trying to fetch the child account flag.
   // Empty when we are not currently fetching.
   std::string account_id_;
 
   scoped_ptr<AccountServiceFlagFetcher> flag_fetcher_;
   // If fetching the account service flag fails, retry with exponential backoff.
   base::OneShotTimer<ChildAccountService> flag_fetch_timer_;
   net::BackoffEntry flag_fetch_backoff_;
 
   scoped_ptr<FamilyInfoFetcher> family_fetcher_;
   // If fetching the family info fails, retry with exponential backoff.
   base::OneShotTimer<ChildAccountService> family_fetch_timer_;
   net::BackoffEntry family_fetch_backoff_;
 
   // Callbacks to run when the user status becomes known.
   std::vector<base::Closure> status_received_callback_list_;
 
   base::WeakPtrFactory<ChildAccountService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildAccountService);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_CHILD_ACCOUNTS_CHILD_ACCOUNT_SERVICE_H_