Add log date to the metrics log

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.

[Alexei Svitkine (slow), 2016/09/30 20:30:31]

Nit: add "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.

[Alexei Svitkine (slow), 2016/09/30 20:30:31]

Nit: add "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
 // checkbox shown during first-run. If it's opt-in, then the checkbox defaulted
 // to unchecked, if it's opt-out, then it defaulted to checked. This value is
 // only recorded during first-run, so older clients will not set it. The enum
 // used for the value is metrics::MetricsServiceClient::EnableMetricsDefault.
 const char kMetricsDefaultOptIn[] = "user_experience_metrics.default_opt_in";
 
-// 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.
-const char kMetricsInitialLogs[] =
-    "user_experience_metrics.initial_logs_list";
+// Array of dictionaries 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.
+const char kMetricsInitialLogs[] = "user_experience_metrics.initial_logs2";
 
 // The metrics entropy source.
 // Note: The name low_entropy_source2 is a result of creating
 // new prefs to do a one-time reset of the previous values.
 const char kMetricsLowEntropySource[] =
     "user_experience_metrics.low_entropy_source2";
 
 // A machine ID used to detect when underlying hardware changes. It is only
 // stored locally and never transmitted in metrics reports.
 const char kMetricsMachineId[] = "user_experience_metrics.machine_id";
 
-// Array of strings that are each UMA logs that were not sent because the
-// browser terminated before these accumulated metrics could be sent.  These
+// Array of dictionaries 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.
-const char kMetricsOngoingLogs[] =
-    "user_experience_metrics.ongoing_logs_list";
+const char kMetricsOngoingLogs[] = "user_experience_metrics.ongoing_logs2";
 
 // Boolean that indicates a cloned install has been detected and the metrics
 // client id and low entropy source should be reset.
 const char kMetricsResetIds[] = "user_experience_metrics.reset_metrics_ids";
 
 // Boolean that specifies whether or not crash reporting and metrics reporting
 // are sent over the network for analysis.
 const char kMetricsReportingEnabled[] =
     "user_experience_metrics.reporting_enabled";
 
@@ skipping 146 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