chromium/chrome/browser/page_load_metrics/observers/local_network_requests_page_load_metrics_observer.h

// Copyright 2017 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_PAGE_LOAD_METRICS_OBSERVERS_LOCAL_NETWORK_REQUESTS_PAGE_LOAD_METRICS_OBSERVER_H_
#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_LOCAL_NETWORK_REQUESTS_PAGE_LOAD_METRICS_OBSERVER_H_

#include <map>
#include <memory>
#include <string>
#include <utility>

#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
#include "net/base/ip_address.h"

namespace internal {

// The domain type of the IP address of the loaded page. We use these to
// determine what classes of resource request metrics to collect.
enum DomainType { … };

// The type of the IP address of the loaded resource.
enum ResourceType { … };

// The types of services to distinguish between when collecting local network
// request metrics.
enum PortType { … };

// For simple access during UMA histogram logging, the names are in a
// multidimensional map indexed by [DomainType][ResourceType][Status].
const std::map<DomainType, std::map<ResourceType, std::map<bool, std::string>>>&
GetNonlocalhostHistogramNames();
// For localhost histogram names, the map is indexed by
// [DomainType][PortType][Status].
const std::map<DomainType, std::map<PortType, std::map<bool, std::string>>>&
GetLocalhostHistogramNames();

}  // namespace internal

// This observer is for observing local network requests.
// TODO(uthakore): Add description.
class LocalNetworkRequestsPageLoadMetricsObserver
    : public page_load_metrics::PageLoadMetricsObserver { … };

#endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_LOCAL_NETWORK_REQUESTS_PAGE_LOAD_METRICS_OBSERVER_H_