chromium/chrome/browser/page_load_metrics/observers/core/amp_page_load_metrics_observer.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/page_load_metrics/observers/core/amp_page_load_metrics_observer.h"

#include <algorithm>
#include <optional>
#include <string>
#include <string_view>

#include "base/memory/ptr_util.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "components/page_load_metrics/browser/observers/core/largest_contentful_paint_handler.h"
#include "components/page_load_metrics/browser/page_load_metrics_observer_delegate.h"
#include "components/page_load_metrics/browser/page_load_metrics_util.h"
#include "components/page_load_metrics/common/page_load_timing.h"
#include "components/page_load_metrics/common/page_visit_final_status.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/render_frame_host.h"
#include "net/base/url_util.h"
#include "services/metrics/public/cpp/metrics_utils.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "third_party/blink/public/common/features.h"
#include "url/gurl.h"

namespace {

const char kHistogramPrefix[] = …;

const char kHistogramAMPSubframeNavigationToInput[] = …;
const char kHistogramAMPSubframeInputToNavigation[] = …;
const char kHistogramAMPSubframeMainFrameToSubFrameNavigation[] = …;
const char kHistogramAMPSubframeFirstContentfulPaint[] = …;
const char kHistogramAMPSubframeFirstContentfulPaintFullNavigation[] = …;
const char kHistogramAMPSubframeLargestContentfulPaint[] = …;
const char kHistogramAMPSubframeLargestContentfulPaintFullNavigation[] = …;
const char kHistogramAMPSubframeFirstInputDelay[] = …;
const char kHistogramAMPSubframeFirstInputDelayFullNavigation[] = …;

const char kHistogramAMPSubframeNumInteractions[] = …;
const char
    kHistogramAMPSubframeUserInteractionHighPercentile2MaxEventDuration[] = …;

const char kHistogramAMPSubframeWorstUserInteractionLatencyMaxEventDuration[] = …;

GURL GetCanonicalizedSameDocumentUrl(const GURL& url) { … }

bool IsLikelyAmpCacheUrl(const GURL& url) { … }

// Extracts the AMP viewer URL from a URL, as encoded in a fragment parameter.
GURL GetViewerUrlFromCacheUrl(const GURL& url) { … }

base::TimeDelta ClampToZero(base::TimeDelta t) { … }

}  // namespace

bool IsInPrerenderingBeforeActivation(
    const page_load_metrics::PageLoadMetricsObserverDelegate& delegate) { … }

AMPPageLoadMetricsObserver::AMPPageLoadMetricsObserver() { … }

AMPPageLoadMetricsObserver::~AMPPageLoadMetricsObserver() { … }

AMPPageLoadMetricsObserver::SubFrameInfo::SubFrameInfo() = default;
AMPPageLoadMetricsObserver::SubFrameInfo::~SubFrameInfo() = default;

const char* AMPPageLoadMetricsObserver::GetObserverName() const { … }

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
AMPPageLoadMetricsObserver::OnFencedFramesStart(
    content::NavigationHandle* navigation_handle,
    const GURL& currently_committed_url) { … }

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
AMPPageLoadMetricsObserver::OnPrerenderStart(
    content::NavigationHandle* navigation_handle,
    const GURL& currently_committed_url) { … }

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
AMPPageLoadMetricsObserver::OnCommit(
    content::NavigationHandle* navigation_handle) { … }

void AMPPageLoadMetricsObserver::DidActivatePrerenderedPage(
    content::NavigationHandle* navigation_handle) { … }

void AMPPageLoadMetricsObserver::OnCommitSameDocumentNavigation(
    content::NavigationHandle* navigation_handle) { … }

void AMPPageLoadMetricsObserver::OnDidFinishSubFrameNavigation(
    content::NavigationHandle* navigation_handle) { … }

void AMPPageLoadMetricsObserver::OnRenderFrameDeleted(
    content::RenderFrameHost* rfh) { … }

void AMPPageLoadMetricsObserver::OnTimingUpdate(
    content::RenderFrameHost* subframe_rfh,
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void AMPPageLoadMetricsObserver::OnInputTimingUpdate(
    content::RenderFrameHost* subframe_rfh,
    const page_load_metrics::mojom::InputTiming& input_timing_delta) { … }

void AMPPageLoadMetricsObserver::OnSubFrameRenderDataUpdate(
    content::RenderFrameHost* subframe_rfh,
    const page_load_metrics::mojom::FrameRenderDataUpdate& render_data) { … }

void AMPPageLoadMetricsObserver::OnComplete(
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void AMPPageLoadMetricsObserver::ProcessMainFrameNavigation(
    content::NavigationHandle* navigation_handle) { … }

void AMPPageLoadMetricsObserver::OnLoadingBehaviorObserved(
    content::RenderFrameHost* subframe_rfh,
    int behavior_flags) { … }

void AMPPageLoadMetricsObserver::MaybeRecordLoadingBehaviorObserved() { … }

void AMPPageLoadMetricsObserver::MaybeRecordAmpDocumentMetrics() { … }

void AMPPageLoadMetricsObserver::RecordNormalizedResponsivenessMetrics(
    const page_load_metrics::ResponsivenessMetricsNormalization&
        responsiveness_metrics_normalization,
    ukm::builders::AmpPageLoad& builder) { … }