Record UMA reporting default state as opt-out

chrome/browser/metrics/chrome_metrics_service_client.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 "chrome/browser/metrics/chrome_metrics_service_client.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 458 matching lines @@
   ChromeOSMetricsProvider* chromeos_metrics_provider =
       new ChromeOSMetricsProvider;
   chromeos_metrics_provider_ = chromeos_metrics_provider;
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(chromeos_metrics_provider));
 
   SigninStatusMetricsProviderChromeOS* signin_metrics_provider_cros =
       new SigninStatusMetricsProviderChromeOS;
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(signin_metrics_provider_cros));
+
+  // Record default UMA state as opt-out for all Chrome OS users, if not
+  // recorded yet.
+  PrefService* local_state = g_browser_process->local_state();
+  if (metrics::GetMetricsReportingDefaultState(local_state) ==
+      metrics::EnableMetricsDefault::DEFAULT_UNKNOWN) {
+    metrics::RecordMetricsReportingDefaultState(
+        local_state, metrics::EnableMetricsDefault::OPT_OUT);
+  }
 #endif  // defined(OS_CHROMEOS)
 
 #if !defined(OS_CHROMEOS)
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           SigninStatusMetricsProvider::CreateInstance(base::WrapUnique(
               new ChromeSigninStatusMetricsProviderDelegate))));
 #endif  // !defined(OS_CHROMEOS)
 
   metrics_service_->RegisterMetricsProvider(
@@ skipping 244 matching lines @@
   }
 }
 
 void ChromeMetricsServiceClient::OnURLOpenedFromOmnibox(OmniboxLog* log) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 bool ChromeMetricsServiceClient::IsUMACellularUploadLogicEnabled() {
   return metrics::IsCellularLogicEnabled();
 }