Persist core system profile during startup.

components/metrics/file_metrics_provider_unittest.cc

 // Copyright 2016 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/file_metrics_provider.h"
 
 #include <functional>
 
 #include "base/files/file_util.h"
 #include "base/files/memory_mapped_file.h"
@@ skipping 478 matching lines @@
   CreateMetricsFileWithHistograms(
       2, [](base::PersistentHistogramAllocator* allocator) {
         SystemProfileProto profile_proto;
         SystemProfileProto::FieldTrial* trial = profile_proto.add_field_trial();
         trial->set_name_id(123);
         trial->set_group_id(456);
 
         PersistentSystemProfile persistent_profile;
         persistent_profile.RegisterPersistentAllocator(
             allocator->memory_allocator());
-        persistent_profile.SetSystemProfile(profile_proto);
+        persistent_profile.SetSystemProfile(profile_proto, true);
       });
 
   // Register the file and allow the "checker" task to run.
   ASSERT_TRUE(PathExists(metrics_file()));
   provider()->RegisterSource(
       metrics_file(), FileMetricsProvider::SOURCE_HISTOGRAMS_ATOMIC_FILE,
       FileMetricsProvider::ASSOCIATE_INTERNAL_PROFILE, kMetricsName);
 
   // Record embedded snapshots via snapshot-manager.
   OnDidCreateMetricsLog();
@@ skipping 50 matching lines @@
   CreateMetricsFileWithHistograms(
       2, [](base::PersistentHistogramAllocator* allocator) {
         SystemProfileProto profile_proto;
         SystemProfileProto::FieldTrial* trial = profile_proto.add_field_trial();
         trial->set_name_id(123);
         trial->set_group_id(456);
 
         PersistentSystemProfile persistent_profile;
         persistent_profile.RegisterPersistentAllocator(
             allocator->memory_allocator());
-        persistent_profile.SetSystemProfile(profile_proto);
+        persistent_profile.SetSystemProfile(profile_proto, true);
       });
 
   // Register the file and allow the "checker" task to run.
   ASSERT_TRUE(PathExists(metrics_file()));
   provider()->RegisterSource(
       metrics_file(), FileMetricsProvider::SOURCE_HISTOGRAMS_ATOMIC_FILE,
       FileMetricsProvider::ASSOCIATE_INTERNAL_PROFILE_OR_PREVIOUS_RUN,
       kMetricsName);
 
   // Record embedded snapshots via snapshot-manager.
@@ skipping 10 matching lines @@
     EXPECT_TRUE(ProvideIndependentMetrics(&profile, &snapshot_manager));
     EXPECT_FALSE(ProvideIndependentMetrics(&profile, &snapshot_manager));
   }
   EXPECT_TRUE(base::PathExists(metrics_file()));
   OnDidCreateMetricsLog();
   RunTasks();
   EXPECT_FALSE(base::PathExists(metrics_file()));
 }
 
 }  // namespace metrics