Drop ntp_snippets::kStudyName in chrome://flags

components/ntp_snippets/remote/remote_suggestions_scheduler_impl_unittest.cc

 // Copyright 2016 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/ntp_snippets/remote/remote_suggestions_scheduler_impl.h"
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 88 matching lines @@
 
 }  // namespace
 
 class RemoteSuggestionsSchedulerImplTest : public ::testing::Test {
  public:
   RemoteSuggestionsSchedulerImplTest()
       :  // For the test we enabled all trigger types.
         default_variation_params_{{"scheduler_trigger_types",
                                    "persistent_scheduler_wake_up,ntp_opened,"
                                    "browser_foregrounded,browser_cold_start"}},
-        params_manager_(ntp_snippets::kStudyName,
+        params_manager_(ntp_snippets::kArticleSuggestionsFeature.name,
                         default_variation_params_,
                         {kArticleSuggestionsFeature.name}),
         user_classifier_(/*pref_service=*/nullptr,
                          base::MakeUnique<base::DefaultClock>()) {
     RemoteSuggestionsSchedulerImpl::RegisterProfilePrefs(
         utils_.pref_service()->registry());
     RequestThrottler::RegisterProfilePrefs(utils_.pref_service()->registry());
     // TODO(jkrcal) Create a static function in EulaAcceptedNotifier that
     // registers this pref and replace the call in browser_process_impl.cc & in
     // eula_accepted_notifier_unittest.cc with the new static function.
@@ skipping 15 matching lines @@
     scheduler_->SetProvider(provider_.get());
   }
 
   void SetVariationParameter(const std::string& param_name,
                              const std::string& param_value) {
     std::map<std::string, std::string> params = default_variation_params_;
     params[param_name] = param_value;
 
     params_manager_.ClearAllVariationParams();
     params_manager_.SetVariationParamsWithFeatureAssociations(
-        ntp_snippets::kStudyName, params,
+        ntp_snippets::kArticleSuggestionsFeature.name, params,
         {ntp_snippets::kArticleSuggestionsFeature.name});
   }
 
   bool IsEulaNotifierAvailable() {
     // Create() returns a unique_ptr, so this is no leak.
     return web_resource::EulaAcceptedNotifier::Create(&local_state_) != nullptr;
   }
 
   void SetEulaAcceptedPref() {
     local_state_.SetBoolean(::prefs::kEulaAccepted, true);
@@ skipping 611 matching lines @@
   for (int x = 0; x < 5; ++x) {
     scheduler()->OnPersistentSchedulerWakeUp();
     signal_fetch_done.Run(Status::Success());
   }
 
   // For the 6th time, it is blocked by the scheduling provider.
   scheduler()->OnPersistentSchedulerWakeUp();
 }
 
 }  // namespace ntp_snippets