[UserClassifier] Inject a clock

components/ntp_snippets/remote/remote_suggestions_fetcher_unittest.cc

Index: components/ntp_snippets/remote/remote_suggestions_fetcher_unittest.cc
diff --git a/components/ntp_snippets/remote/remote_suggestions_fetcher_unittest.cc b/components/ntp_snippets/remote/remote_suggestions_fetcher_unittest.cc
index 68243166726c6e051055dfdf1c6d6eb6339bfc2d..6ef68515fa97c81a579ceb1efe3c1fd8fa3b6431 100644
--- a/components/ntp_snippets/remote/remote_suggestions_fetcher_unittest.cc
+++ b/components/ntp_snippets/remote/remote_suggestions_fetcher_unittest.cc
@@ -16,6 +16,7 @@
 #include "base/test/histogram_tester.h"
 #include "base/test/test_mock_time_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "base/time/default_clock.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "components/ntp_snippets/category.h"
@@ -280,7 +281,8 @@ class RemoteSuggestionsFetcherTestBase : public testing::Test {
         mock_task_runner_handle_(mock_task_runner_),
         test_url_(gurl) {
     UserClassifier::RegisterProfilePrefs(utils_.pref_service()->registry());
-    user_classifier_ = base::MakeUnique<UserClassifier>(utils_.pref_service());
+    user_classifier_ = base::MakeUnique<UserClassifier>(
+        utils_.pref_service(), base::MakeUnique<base::DefaultClock>());
     // Increase initial time such that ticks are non-zero.
     mock_task_runner_->FastForwardBy(base::TimeDelta::FromMilliseconds(1234));
     ResetFetcher();