Starting a refactor to allow adding metrics on 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 831 matching lines @@
     scheduler_->UploadFinished(true /* healthy */, false /* no unsent logs */);
     return;
   }
   // If there are unsent logs, send the next one. If not, start the asynchronous
   // process of finalizing the current log for upload.
   if (state_ == SENDING_OLD_LOGS) {
     DCHECK(log_manager_.has_unsent_logs());
     log_manager_.StageNextLogForUpload();
     SendStagedLog();
   } else {
+    for (size_t i = 0; i < metrics_providers_.size(); ++i)
+      metrics_providers_[i]->OnCollectFinalMetrics();
+
     client_->CollectFinalMetrics(
         base::Bind(&MetricsService::OnFinalLogInfoCollectionDone,
                    self_ptr_factory_.GetWeakPtr()));
   }
 }
 
 void MetricsService::OnFinalLogInfoCollectionDone() {
   // If somehow there is a log upload in progress, we return and hope things
   // work out. The scheduler isn't informed since if this happens, the scheduler
   // will get a response from the upload.
@@ skipping 379 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