1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright 2021 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_PAGE_ANCHORS_METRICS_OBSERVER_H_
#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_PAGE_ANCHORS_METRICS_OBSERVER_H_
#include "base/memory/raw_ptr.h"
#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
#include "content/public/browser/document_user_data.h"
#include "content/public/browser/render_frame_host.h"
// Tracks anchor information in content::NavigationPredictor to report gathered
// data on navigating out the page. Ideally this should be managed by
// per outermost page manner. However we ensure that this structure is not
// created and accessed during prerendering as we have a DCHECK in
// content::NavigationPredictor::ReportNewAnchorElements. So, we can manage it
// as per WebContents without polluting gathered data.
class PageAnchorsMetricsObserver
: public page_load_metrics::PageLoadMetricsObserver {
public:
PageAnchorsMetricsObserver(const PageAnchorsMetricsObserver&) = delete;
explicit PageAnchorsMetricsObserver(content::WebContents* web_contents) {}
PageAnchorsMetricsObserver& operator=(const PageAnchorsMetricsObserver&) =
delete;
// page_load_metrics::PageLoadMetricsObserver:
ObservePolicy OnPrerenderStart(content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) override;
page_load_metrics::PageLoadMetricsObserver::ObservePolicy OnFencedFramesStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) override;
void OnComplete(
const page_load_metrics::mojom::PageLoadTiming& timing) override;
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
FlushMetricsOnAppEnterBackground(
const page_load_metrics::mojom::PageLoadTiming& timing) override;
void DidActivatePrerenderedPage(
content::NavigationHandle* navigation_handle) override;
page_load_metrics::PageLoadMetricsObserver::ObservePolicy OnCommit(
content::NavigationHandle* navigation_handle) override;
void OnRenderFrameDeleted(content::RenderFrameHost* rfh) override;
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
OnEnterBackForwardCache(
const page_load_metrics::mojom::PageLoadTiming& timing) override;
void OnRestoreFromBackForwardCache(
const page_load_metrics::mojom::PageLoadTiming& timing,
content::NavigationHandle* navigation_handle) override;
private:
void UpdateRenderFrameHostAndSourceId(
content::NavigationHandle* navigation_handle);
void RecordDataToUkm();
void RecordAnchorElementMetricsDataToUkm();
content::RenderFrameHost* render_frame_host() const {
return render_frame_host_id_.has_value()
? content::RenderFrameHost::FromID(render_frame_host_id_.value())
: nullptr;
}
bool is_in_prerendered_page_ = false;
std::optional<content::GlobalRenderFrameHostId> render_frame_host_id_;
ukm::SourceId ukm_source_id_;
};
#endif // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_PAGE_ANCHORS_METRICS_OBSERVER_H_
|
