Persist core system profile during startup.

components/metrics/metrics_log.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.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 105 matching lines @@
   else
     uma_proto_.set_client_id(Hash(client_id));
 
   uma_proto_.set_session_id(session_id);
 
   const int32_t product = client_->GetProduct();
   // Only set the product if it differs from the default value.
   if (product != uma_proto_.product())
     uma_proto_.set_product(product);
 
-  RecordCoreSystemProfile(client_, uma_proto_.mutable_system_profile());
+  SystemProfileProto* system_profile = uma_proto()->mutable_system_profile();
+  RecordCoreSystemProfile(client_, system_profile);
+  if (log_type_ == ONGOING_LOG) {
+    GlobalPersistentSystemProfile::GetInstance()->SetSystemProfile(
+        *system_profile, /*complete=*/false);
+  }
 }
 
 MetricsLog::~MetricsLog() {
 }
 
 // static
 void MetricsLog::RegisterPrefs(PrefRegistrySimple* registry) {
   EnvironmentRecorder::RegisterPrefs(registry);
 }
 
@@ skipping 194 matching lines @@
   WriteFieldTrials(field_trial_ids, system_profile);
   WriteFieldTrials(synthetic_trials, system_profile);
 
   for (size_t i = 0; i < metrics_providers.size(); ++i)
     metrics_providers[i]->ProvideSystemProfileMetrics(system_profile);
 
   EnvironmentRecorder recorder(local_state_);
   std::string serialized_proto =
       recorder.SerializeAndRecordEnvironmentToPrefs(*system_profile);
 
-  GlobalPersistentSystemProfile::GetInstance()->SetSystemProfile(
-      serialized_proto);
+  if (log_type_ == ONGOING_LOG) {
+    GlobalPersistentSystemProfile::GetInstance()->SetSystemProfile(
+        serialized_proto, /*complete=*/true);
+  }
 
   return serialized_proto;
 }
 
 bool MetricsLog::LoadIndependentMetrics(MetricsProvider* metrics_provider) {
   SystemProfileProto* system_profile = uma_proto()->mutable_system_profile();
   IndependentFlattener flattener(this);
   base::HistogramSnapshotManager snapshot_manager(&flattener);
 
   return metrics_provider->ProvideIndependentMetrics(system_profile,
@@ skipping 35 matching lines @@
         uma_proto_.omnibox_event_size() - internal::kOmniboxEventLimit);
   }
 }
 
 void MetricsLog::GetEncodedLog(std::string* encoded_log) {
   DCHECK(closed_);
   uma_proto_.SerializeToString(encoded_log);
 }
 
 }  // namespace metrics