Remove old-format PersistedLogs support

components/metrics/metrics_log_manager_unittest.cc

 // 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.
 
 #include "components/metrics/metrics_log_manager.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 149 matching lines @@
   {
     MetricsLogManager log_manager(&pref_service, 0);
     log_manager.LoadPersistedUnsentLogs();
 
     // Simulate a log having already been unsent from a previous session.
     {
       std::string log("proto");
       PersistedLogs ongoing_logs(std::unique_ptr<PersistedLogsMetricsImpl>(
                                      new PersistedLogsMetricsImpl()),
                                  &pref_service, prefs::kMetricsOngoingLogs,
-                                 prefs::kDeprecatedMetricsOngoingLogs, 1, 1, 0);
+                                 1, 1, 0);
       ongoing_logs.StoreLog(log);
       ongoing_logs.SerializeLogs();
     }
     EXPECT_EQ(1U, pref_service.TypeCount(MetricsLog::ONGOING_LOG));
     EXPECT_FALSE(log_manager.has_unsent_logs());
     log_manager.LoadPersistedUnsentLogs();
     EXPECT_TRUE(log_manager.has_unsent_logs());
 
     log_manager.BeginLoggingWithLog(base::MakeUnique<MetricsLog>(
         "id", 0, MetricsLog::INITIAL_STABILITY_LOG, &client, &pref_service));
@@ skipping 120 matching lines @@
     log_manager.FinishCurrentLog();
     log_manager.DiscardStagedLog();
 
     log_manager.PersistUnsentLogs();
     EXPECT_EQ(0U, pref_service.TypeCount(MetricsLog::INITIAL_STABILITY_LOG));
     EXPECT_EQ(1U, pref_service.TypeCount(MetricsLog::ONGOING_LOG));
   }
 }
 
 }  // namespace metrics