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

// Copyright 2015 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_FROM_GWS_PAGE_LOAD_METRICS_OBSERVER_H_
#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_FROM_GWS_PAGE_LOAD_METRICS_OBSERVER_H_

#include <optional>

#include "base/time/time.h"
#include "components/google/core/common/google_util.h"
#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
#include "services/metrics/public/cpp/ukm_source.h"
#include "url/gurl.h"

namespace internal {
// Exposed for tests.
extern const char kHistogramFromGWSDomContentLoaded[];
extern const char kHistogramFromGWSLoad[];
extern const char kHistogramFromGWSFirstPaint[];
extern const char kHistogramFromGWSFirstImagePaint[];
extern const char kHistogramFromGWSFirstContentfulPaint[];
extern const char kHistogramFromGWSLargestContentfulPaint[];
extern const char kHistogramFromGWSParseStartToFirstContentfulPaint[];
extern const char kHistogramFromGWSParseStart[];
extern const char kHistogramFromGWSFirstInputDelay[];
extern const char kHistogramFromGWSAbortStopBeforePaint[];
extern const char kHistogramFromGWSAbortStopBeforeInteraction[];
extern const char kHistogramFromGWSAbortStopBeforeCommit[];
extern const char kHistogramFromGWSAbortCloseBeforePaint[];
extern const char kHistogramFromGWSAbortCloseBeforeInteraction[];
extern const char kHistogramFromGWSAbortCloseBeforeCommit[];
extern const char kHistogramFromGWSAbortNewNavigationBeforeCommit[];
extern const char kHistogramFromGWSAbortNewNavigationBeforePaint[];
extern const char kHistogramFromGWSAbortNewNavigationBeforeInteraction[];
extern const char kHistogramFromGWSAbortReloadBeforeInteraction[];
extern const char kHistogramFromGWSForegroundDuration[];
extern const char kHistogramFromGWSForegroundDurationAfterPaint[];
extern const char kHistogramFromGWSForegroundDurationNoCommit[];
extern const char kHistogramFromGWSCumulativeLayoutShiftMainFrame[];
extern const char kHistogramFromGWSMaxCumulativeShiftScoreSessionWindow[];

extern const char kHistogramFromGWSFromSidePanelFirstInputDelay[];
extern const char
    kHistogramFromGWSFromSidePanelMaxCumulativeShiftScoreSessionWindow[];
extern const char kHistogramFromGWSFromSidePanelFirstContentfulPaint[];
extern const char kHistogramFromGWSFromSidePanelFirstImagePaint[];
extern const char kHistogramFromGWSFromSidePanelLargestContentfulPaint[];

}  // namespace internal

// FromGWSPageLoadMetricsLogger is a peer class to
// FromGWSPageLoadMetricsObserver. FromGWSPageLoadMetricsLogger is responsible
// for tracking state needed to decide if metrics should be logged, and to log
// metrics in cases where metrics should be logged. FromGWSPageLoadMetricsLogger
// exists to decouple the logging policy implementation from other Chromium
// classes such as NavigationHandle and related infrastructure, in order to make
// the code more unit testable.
class FromGWSPageLoadMetricsLogger { … };

class FromGWSPageLoadMetricsObserver
    : public page_load_metrics::PageLoadMetricsObserver { … };

#endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_FROM_GWS_PAGE_LOAD_METRICS_OBSERVER_H_