Record document mode histogram in UMA on every upload.

components/metrics/metrics_service.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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It is
@@ skipping 758 matching lines @@
   std::vector<variations::ActiveGroupId> synthetic_trials;
   GetCurrentSyntheticFieldTrials(&synthetic_trials);
   current_log->RecordEnvironment(
       metrics_providers_.get(), synthetic_trials, GetInstallDate());
   base::TimeDelta incremental_uptime;
   base::TimeDelta uptime;
   GetUptimes(local_state_, &incremental_uptime, &uptime);
   current_log->RecordStabilityMetrics(metrics_providers_.get(),
                                       incremental_uptime, uptime);
 
+  current_log->RecordGeneralMetrics(metrics_providers_.get());
   RecordCurrentHistograms();
-  current_log->RecordGeneralMetrics(metrics_providers_.get());
 
   log_manager_.FinishCurrentLog();
 }
 
 void MetricsService::PushPendingLogsToPersistentStorage() {
   if (state_ < SENDING_INITIAL_STABILITY_LOG)
     return;  // We didn't and still don't have time to get plugin list etc.
 
   CloseCurrentLog();
   log_manager_.PersistUnsentLogs();
@@ skipping 193 matching lines @@
   // Histograms only get written to the current log, so make the new log current
   // before writing them.
   log_manager_.PauseCurrentLog();
   log_manager_.BeginLoggingWithLog(initial_metrics_log_.Pass());
 
   // Note: Some stability providers may record stability stats via histograms,
   //       so this call has to be after BeginLoggingWithLog().
   MetricsLog* current_log = log_manager_.current_log();
   current_log->RecordStabilityMetrics(metrics_providers_.get(),
                                       base::TimeDelta(), base::TimeDelta());
+  current_log->RecordGeneralMetrics(metrics_providers_.get());
   RecordCurrentHistograms();
 
-  current_log->RecordGeneralMetrics(metrics_providers_.get());
-
   log_manager_.FinishCurrentLog();
   log_manager_.ResumePausedLog();
 
   // Store unsent logs, including the initial log that was just saved, so
   // that they're not lost in case of a crash before upload time.
   log_manager_.PersistUnsentLogs();
 
   DCHECK(!log_manager_.has_staged_log());
   log_manager_.StageNextLogForUpload();
 }
@@ skipping 207 matching lines @@
   local_state_->SetBoolean(path, value);
   RecordCurrentState(local_state_);
 }
 
 void MetricsService::RecordCurrentState(PrefService* pref) {
   pref->SetInt64(metrics::prefs::kStabilityLastTimestampSec,
                  base::Time::Now().ToTimeT());
 }
 
 }  // namespace metrics