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

chrome/browser/supervised_user/child_accounts/child_account_service.cc

Index: chrome/browser/supervised_user/child_accounts/child_account_service.cc
diff --git a/chrome/browser/supervised_user/child_accounts/child_account_service.cc b/chrome/browser/supervised_user/child_accounts/child_account_service.cc
index c192d83d68710a5c872b50e5e05bc0cacdf3d2a3..9c7e092e6f756b563efa907def98e805013d6a17 100644
--- a/chrome/browser/supervised_user/child_accounts/child_account_service.cc
+++ b/chrome/browser/supervised_user/child_accounts/child_account_service.cc
@@ -181,8 +181,6 @@ bool ChildAccountService::SetActive(bool active) {
         SupervisedUserServiceFactory::GetForProfile(profile_);
     service->AddPermissionRequestCreator(
         PermissionRequestCreatorApiary::CreateWithProfile(profile_));
-
-    EnableExperimentalFiltering();
   } else {
     SupervisedUserSettingsService* settings_service =
         SupervisedUserSettingsServiceFactory::GetForProfile(profile_);
@@ -426,23 +424,3 @@ void ChildAccountService::ClearSecondCustodianPrefs() {
   profile_->GetPrefs()->ClearPref(
       prefs::kSupervisedUserSecondCustodianProfileImageURL);
 }
-
-void ChildAccountService::EnableExperimentalFiltering() {
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-
-  // Static blacklist defaults to enabled.
-  bool has_enable_blacklist =
-      command_line->HasSwitch(switches::kEnableSupervisedUserBlacklist);
-  bool has_disable_blacklist =
-      command_line->HasSwitch(switches::kDisableSupervisedUserBlacklist);
-  if (!has_enable_blacklist && !has_disable_blacklist)
-    command_line->AppendSwitch(switches::kEnableSupervisedUserBlacklist);
-
-  // Query-based filtering also defaults to enabled.
-  bool has_enable_safesites =
-      command_line->HasSwitch(switches::kEnableSupervisedUserSafeSites);
-  bool has_disable_safesites =
-      command_line->HasSwitch(switches::kDisableSupervisedUserSafeSites);
-  if (!has_enable_safesites && !has_disable_safesites)
-    command_line->AppendSwitch(switches::kEnableSupervisedUserSafeSites);
-}