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

// Copyright 2022 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_GWS_PAGE_LOAD_METRICS_OBSERVER_H_
#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_GWS_PAGE_LOAD_METRICS_OBSERVER_H_

#include "components/google/core/common/google_util.h"
#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
#include "content/public/browser/navigation_handle_timing.h"

namespace internal {
// Exposed for tests.

extern const char kHistogramGWSNavigationStartToFinalRequestStart[];
extern const char kHistogramGWSNavigationStartToFinalResponseStart[];
extern const char kHistogramGWSNavigationStartToFinalLoaderCallback[];
extern const char kHistogramGWSNavigationStartToFirstRequestStart[];
extern const char kHistogramGWSNavigationStartToFirstResponseStart[];
extern const char kHistogramGWSNavigationStartToFirstLoaderCallback[];
extern const char kHistogramGWSNavigationStartToOnComplete[];

extern const char kHistogramGWSConnectTimingFirstRequestDomainLookupDelay[];
extern const char kHistogramGWSConnectTimingFirstRequestConnectDelay[];
extern const char kHistogramGWSConnectTimingFirstRequestSslDelay[];
extern const char kHistogramGWSConnectTimingFinalRequestDomainLookupDelay[];
extern const char kHistogramGWSConnectTimingFinalRequestConnectDelay[];
extern const char kHistogramGWSConnectTimingFinalRequestSslDelay[];

extern const char kHistogramGWSAFTEnd[];
extern const char kHistogramGWSAFTStart[];

extern const char kHistogramGWSFirstContentfulPaint[];
extern const char kHistogramGWSLargestContentfulPaint[];
extern const char kHistogramGWSParseStart[];
extern const char kHistogramGWSConnectStart[];
extern const char kHistogramGWSDomainLookupStart[];
extern const char kHistogramGWSDomainLookupEnd[];

}  // namespace internal

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

#endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_GWS_PAGE_LOAD_METRICS_OBSERVER_H_