| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/metrics/expired_histogram_util.h" |
| |
| #include "base/feature_list.h" |
| #include "base/metrics/field_trial_params.h" |
| #include "base/metrics/statistics_recorder.h" |
| #include "components/metrics/expired_histograms_checker.h" |
| |
| namespace metrics { |
| namespace { |
| |
| BASE_FEATURE(kExpiredHistogramLogicFeature, |
| "ExpiredHistogramLogic", |
| base::FEATURE_DISABLED_BY_DEFAULT); |
| |
| const base::FeatureParam<std::string> kAllowlistParam{ |
| &kExpiredHistogramLogicFeature, "allowlist", ""}; |
| |
| } // namespace |
| |
| void EnableExpiryChecker(base::span<const uint32_t> expired_histograms_hashes) { |
| DCHECK(base::FeatureList::GetInstance()); |
| if (base::FeatureList::IsEnabled(kExpiredHistogramLogicFeature)) { |
| std::string allowlist = kAllowlistParam.Get(); |
| base::StatisticsRecorder::SetRecordChecker( |
| std::make_unique<ExpiredHistogramsChecker>(expired_histograms_hashes, |
| allowlist)); |
| } |
| } |
| |
| } // namespace metrics |