#include "components/metrics/structured/lib/key_data_provider.h"
#include <optional>
#include <string>
namespace metrics::structured {
KeyDataProvider::KeyDataProvider() = default;
KeyDataProvider::~KeyDataProvider() = default;
void KeyDataProvider::AddObserver(KeyDataProvider::Observer* observer) { … }
void KeyDataProvider::RemoveObserver(KeyDataProvider::Observer* observer) { … }
void KeyDataProvider::NotifyKeyReady() { … }
std::optional<uint64_t> KeyDataProvider::GetSecondaryId(
const std::string& project_name) { … }
}