Remove old-format PersistedLogs support

components/metrics/metrics_pref_names.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_pref_names.h"
 
 namespace metrics {
 namespace prefs {
 
-// Array of strings that are each UMA logs that were supposed to be sent in the
-// first minute of a browser session. These logs include things like crash count
-// info, etc.
-// Deprecated by kMetricsInitialLogs.
-const char kDeprecatedMetricsInitialLogs[] =
-    "user_experience_metrics.initial_logs_list";
-
-// Array of strings that are each UMA logs that were not sent because the
-// browser terminated before these accumulated metrics could be sent. These
-// logs typically include histograms and memory reports, as well as ongoing
-// user activities.
-// Deprecated by kMetricsOngoingLogs.
-const char kDeprecatedMetricsOngoingLogs[] =
-    "user_experience_metrics.ongoing_logs_list";
-
 // Set once, to the current epoch time, on the first run of chrome on this
 // machine. Attached to metrics reports forever thereafter.
 const char kInstallDate[] = "uninstall_metrics.installation_date2";
 
 // The metrics client GUID.
 // Note: The name client_id2 is a result of creating
 // new prefs to do a one-time reset of the previous values.
 const char kMetricsClientID[] = "user_experience_metrics.client_id2";
 
 // An enum value indicating the default value of the enable metrics reporting
@@ skipping 182 matching lines @@
 // Dictionary for measuring cellular data used by UMA service during last 7
 // days.
 const char kUmaCellDataUse[] = "user_experience_metrics.uma_cell_datause";
 
 // Dictionary for measuring cellular data used by user including chrome services
 // per day.
 const char kUserCellDataUse[] = "user_experience_metrics.user_call_datause";
 
 }  // namespace prefs
 }  // namespace metrics