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// 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(const uint32_t* expired_histograms_hashes,
size_t num_expired_histograms) {
DCHECK(base::FeatureList::GetInstance());
if (base::FeatureList::IsEnabled(kExpiredHistogramLogicFeature)) {
std::string allowlist = kAllowlistParam.Get();
base::StatisticsRecorder::SetRecordChecker(
std::make_unique<ExpiredHistogramsChecker>(
expired_histograms_hashes, num_expired_histograms, allowlist));
}
}
} // namespace metrics
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