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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_METRICS_USAGE_SCENARIO_CHROME_RESPONSIVENESS_CALCULATOR_DELEGATE_H_
#define CHROME_BROWSER_METRICS_USAGE_SCENARIO_CHROME_RESPONSIVENESS_CALCULATOR_DELEGATE_H_
#include <memory>
#include <optional>
#include "base/memory/raw_ptr.h"
#include "chrome/browser/metrics/usage_scenario/usage_scenario.h"
#include "content/public/browser/responsiveness_calculator_delegate.h"
class UsageScenarioDataStore;
class UsageScenarioTracker;
// Emits different versions of the responsiveness metrics with an added suffix
// indicating the usage scenario that Chrome currently is in.
// See chrome/browser/metrics/usage_scenario/usage_scenario.h
// The embedder is responsible for creating instances of this class, but the
// ownership is passed to the //content layer.
class ChromeResponsivenessCalculatorDelegate
: public content::ResponsivenessCalculatorDelegate {
public:
static std::unique_ptr<ChromeResponsivenessCalculatorDelegate> Create();
static std::unique_ptr<ChromeResponsivenessCalculatorDelegate>
CreateForTesting(UsageScenarioDataStore* usage_scenario_data_store);
~ChromeResponsivenessCalculatorDelegate() override;
// content::ResponsivnessCalculatorDelegate:
void OnMeasurementIntervalEnded() override;
void OnResponsivenessEmitted(int num_congested_slices,
int min,
int exclusive_max,
size_t buckets) override;
private:
// Note: the parameter is exclusively for test usage.
explicit ChromeResponsivenessCalculatorDelegate(
UsageScenarioDataStore* usage_scenario_data_store);
std::unique_ptr<UsageScenarioTracker> usage_scenario_tracker_;
raw_ptr<UsageScenarioDataStore> usage_scenario_data_store_;
std::optional<ScenarioParams> interval_scenario_params_;
std::optional<size_t> extensions_with_content_scripts_in_interval_;
};
#endif // CHROME_BROWSER_METRICS_USAGE_SCENARIO_CHROME_RESPONSIVENESS_CALCULATOR_DELEGATE_H_
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