[UserClassifier] Inject a clock

components/ntp_snippets/remote/scheduling_remote_suggestions_provider_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/scheduling_remote_suggestions_provider.h"
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/simple_test_clock.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/clock.h"
+#include "base/time/default_clock.h"
 #include "base/time/time.h"
 #include "components/ntp_snippets/features.h"
 #include "components/ntp_snippets/ntp_snippets_constants.h"
 #include "components/ntp_snippets/pref_names.h"
 #include "components/ntp_snippets/remote/persistent_scheduler.h"
 #include "components/ntp_snippets/remote/remote_suggestions_provider.h"
 #include "components/ntp_snippets/remote/test_utils.h"
 #include "components/ntp_snippets/status.h"
 #include "components/ntp_snippets/user_classifier.h"
 #include "components/prefs/testing_pref_service.h"
@@ skipping 87 matching lines @@
   SchedulingRemoteSuggestionsProviderTest()
       :  // 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,
                         default_variation_params_,
                         {kArticleSuggestionsFeature.name}),
         underlying_provider_(nullptr),
         scheduling_provider_(nullptr),
-        user_classifier_(/*pref_service=*/nullptr) {
+        user_classifier_(/*pref_service=*/nullptr,
+                         base::MakeUnique<base::DefaultClock>()) {
     SchedulingRemoteSuggestionsProvider::RegisterProfilePrefs(
         utils_.pref_service()->registry());
     RequestThrottler::RegisterProfilePrefs(utils_.pref_service()->registry());
     ResetProvider();
   }
 
   void ResetProvider() {
     auto underlying_provider =
         base::MakeUnique<StrictMock<MockRemoteSuggestionsProvider>>(
             /*observer=*/nullptr);
@@ skipping 620 matching lines @@
   for (int x = 0; x < 5; ++x) {
     scheduling_provider_->OnPersistentSchedulerWakeUp();
     signal_fetch_done.Run(Status::Success());
   }
 
   // For the 6th time, it is blocked by the scheduling provider.
   scheduling_provider_->OnPersistentSchedulerWakeUp();
 }
 
 }  // namespace ntp_snippets