chromium/components/flags_ui/flags_ui_metrics.cc

// Copyright 2020 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/flags_ui/flags_ui_metrics.h"

#include <set>
#include <string>

#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/metrics_hashes.h"
#include "base/notreached.h"
#include "base/strings/string_util.h"

namespace flags_ui {

namespace {

// Records a set of feature switches (prefixed with "--").
void ReportAboutFlagsHistogramSwitches(const std::string& uma_histogram_name,
                                       const std::set<std::string>& switches) { … }

// Records a set of FEATURE_VALUE_TYPE features (suffixed with ":enabled" or
// "disabled", depending on their state).
void ReportAboutFlagsHistogramFeatures(const std::string& uma_histogram_name,
                                       const std::set<std::string>& features) { … }

}  // namespace

base::HistogramBase::Sample GetSwitchUMAId(const std::string& switch_name) { … }

void ReportAboutFlagsHistogram(const std::string& uma_histogram_name,
                               const std::set<std::string>& switches,
                               const std::set<std::string>& features) { … }

namespace testing {

const base::HistogramBase::Sample kBadSwitchFormatHistogramId = …;

}  // namespace testing

}  // namespace flags_ui