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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "chrome/browser/metrics/sampling_metrics_provider.h" |
| 6 |
| 7 #include "base/metrics/sparse_histogram.h" |
| 8 #include "chrome/browser/metrics/chrome_metrics_services_manager_client.h" |
| 9 #include "components/metrics/metrics_provider.h" |
| 10 |
| 11 namespace metrics { |
| 12 |
| 13 SamplingMetricsProvider::SamplingMetricsProvider() {} |
| 14 SamplingMetricsProvider::~SamplingMetricsProvider() {} |
| 15 |
| 16 void SamplingMetricsProvider::ProvideGeneralMetrics( |
| 17 ChromeUserMetricsExtension* uma_proto) { |
| 18 UMA_HISTOGRAM_SPARSE_SLOWLY( |
| 19 "UMA.SamplingRatePerMille", |
| 20 ChromeMetricsServicesManagerClient::GetSamplingRatePerMille()); |
| 21 } |
| 22 |
| 23 } // namespace metrics |
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