chromium/components/metrics/structured/lib/key_data_provider.h

// 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 COMPONENTS_METRICS_STRUCTURED_LIB_KEY_DATA_PROVIDER_H_
#define COMPONENTS_METRICS_STRUCTURED_LIB_KEY_DATA_PROVIDER_H_

#include <optional>
#include <string>

#include "base/functional/callback_forward.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "components/metrics/structured/lib/key_data.h"

namespace metrics::structured {

class ChromeStructuredMetricsRecorder;

// Interface to provide key data to be used for hashing projects.
//
// There are two types of keys: device keys and profile keys. Device keys will
// be ready only InitializeDeviceKey has been called while profile keys should
// be ready once InitializeProfileKey has been called.
class KeyDataProvider { … };

}  // namespace metrics::structured

#endif  // COMPONENTS_METRICS_STRUCTURED_LIB_KEY_DATA_PROVIDER_H_