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Commit fa9be289 authored by Tarun Bansal's avatar Tarun Bansal Committed by Commit Bot
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Revert "Include anchor element metrics that differ from one from document URL" 

This reverts commit 290d578e.

Reason for revert: Crashes renderer

Original change's description:
> Include anchor element metrics that differ from one from document URL
> 
> Currently, the render process sends the statistics of
> only the anchor elements that are in the viewport to
> the browser. This CL changes it to also include the
> anchor elements whose target URL is one digit different
> from the document URL.
> 
> Note that there is still a limit of 40 on the count of anchor
> elements that are sent from the render to the browser process.
> 
> Change-Id: I4083e3605095a44700cc2178615713ede6e0dde2
> Bug: 850624
> TBR: ryansturm@chromium.org
> Reviewed-on: https://chromium-review.googlesource.com/c/1329848
> Commit-Queue: Tarun Bansal <tbansal@chromium.org>
> Reviewed-by: Tarun Bansal <tbansal@chromium.org>
> Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#607328}

TBR=kinuko@chromium.org,tbansal@chromium.org,ryansturm@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 850624,905224
Change-Id: I8fe41adb0434d410eb6fd2244e525c05037585f2
Reviewed-on: https://chromium-review.googlesource.com/c/1335664Reviewed-by: default avatarTarun Bansal <tbansal@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608105}
parent 19f9a541
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Inline Side-by-side
Showing with 9 additions and 65 deletions
chrome/browser/navigation_predictor/navigation_predictor_browsertest.cc
View file @ fa9be289
......@@ -464,27 +464,3 @@ IN_PROC_BROWSER_TEST_P(NavigationPredictorBrowserTest,
"AnchorElementMetrics.Clicked.OnNonDSE.SameHost", 0, 1);
}
}
// Tests that the browser only receives anchor elements that are in the
// viewport, and from anchor elements whose target differ from document URL
// by one digit.
IN_PROC_BROWSER_TEST_P(NavigationPredictorBrowserTest,
ViewportOnlyAndUrlIncrementByOne) {
base::HistogramTester histogram_tester;
const GURL& url = GetTestURL("/long_page_with_anchors-1.html");
ui_test_utils::NavigateToURL(browser(), url);
base::RunLoop().RunUntilIdle();
if (base::FeatureList::IsEnabled(
blink::features::kRecordAnchorMetricsVisible)) {
histogram_tester.ExpectUniqueSample(
"AnchorElementMetrics.Visible.NumberOfAnchorElements", 2, 1);
// Same document anchor element should be removed after merge.
histogram_tester.ExpectUniqueSample(
"AnchorElementMetrics.Visible.NumberOfAnchorElementsAfterMerge", 2, 1);
} else {
histogram_tester.ExpectTotalCount(
"AnchorElementMetrics.Visible.NumberOfAnchorElements", 0);
}
}
chrome/test/data/navigation_predictor/long_page_with_anchors-1.html deleted 100644 → 0
View file @ 19f9a541
<html>
<head>
</head>
<body>
<a id="google" href="https://google.com">Google</a>
<img src="large_image_takes_all_viewport.gif" height="4200" width="4200">
<a id="example2" href="https://example2.com">Below viewport</a>
<a id="example3" href="long_page_with_anchors-2.html">Below viewport differ by one</a>
</body>
</html>
\ No newline at end of file
third_party/blink/renderer/core/html/anchor_element_metrics.cc
View file @ fa9be289
......@@ -141,8 +141,7 @@ const int AnchorElementMetrics::kMaxAnchorElementMetricsSize = 40;
// static
base::Optional<AnchorElementMetrics> AnchorElementMetrics::Create(
const HTMLAnchorElement* anchor_element,
bool is_url_incremented_by_one) {
const HTMLAnchorElement* anchor_element) {
LocalFrame* local_frame = anchor_element->GetDocument().GetFrame();
LayoutObject* layout_object = anchor_element->GetLayoutObject();
if (!local_frame || !layout_object)
......@@ -154,11 +153,7 @@ base::Optional<AnchorElementMetrics> AnchorElementMetrics::Create(
return base::nullopt;
IntRect viewport = root_frame_view->LayoutViewport()->VisibleContentRect();
// Do not ignore anchor elements for which |is_url_incremented_by_one| is
// true since there is typically high click probability for such anchor
// elements.
if (viewport.Size().IsEmpty() && !is_url_incremented_by_one)
if (viewport.Size().IsEmpty())
return base::nullopt;
// Use the viewport size to normalize anchor element metrics.
......@@ -210,7 +205,7 @@ base::Optional<AnchorElementMetrics> AnchorElementMetrics::Create(
ratio_distance_top_to_visible_top, ratio_distance_center_to_visible_top,
ratio_distance_root_top, ratio_distance_root_bottom, ratio_root_height,
IsInIFrame(*anchor_element), ContainsImage(*anchor_element),
IsSameHost(*anchor_element), is_url_incremented_by_one);
IsSameHost(*anchor_element), IsUrlIncrementedByOne(*anchor_element));
}
// static
......@@ -224,8 +219,7 @@ AnchorElementMetrics::MaybeReportClickedMetricsOnClick(
return base::nullopt;
}
bool is_url_incremented_by_one = IsUrlIncrementedByOne(*anchor_element);
auto anchor_metrics = Create(anchor_element, is_url_incremented_by_one);
auto anchor_metrics = Create(anchor_element);
if (anchor_metrics.has_value()) {
anchor_metrics.value().RecordMetricsOnClick();
......@@ -255,22 +249,14 @@ void AnchorElementMetrics::MaybeReportViewportMetricsOnLoad(
for (const auto& member_element : sender->GetAnchorElements()) {
const HTMLAnchorElement& anchor_element = *member_element;
if (!anchor_element.Href().ProtocolIsInHTTPFamily())
continue;
bool is_url_incremented_by_one = IsUrlIncrementedByOne(anchor_element);
// We ignore anchor elements that are not in the visual viewport.
// Do not ignore anchor elements for which |is_url_incremented_by_one| is
// true since there is typically high click probability for such anchor
// elements.
if (anchor_element.VisibleBoundsInVisualViewport().IsEmpty() &&
!is_url_incremented_by_one) {
if (!anchor_element.Href().ProtocolIsInHTTPFamily() ||
anchor_element.VisibleBoundsInVisualViewport().IsEmpty()) {
continue;
}
base::Optional<AnchorElementMetrics> anchor_metric =
Create(&anchor_element, is_url_incremented_by_one);
Create(&anchor_element);
if (!anchor_metric.has_value())
continue;
......
third_party/blink/renderer/core/html/anchor_element_metrics.h
View file @ fa9be289
......@@ -55,16 +55,8 @@ class CORE_EXPORT AnchorElementMetrics {
// browser on page load.
static const int kMaxAnchorElementMetricsSize;
// Extract features of the anchor element. |is_url_incremented_by_one| is
// true if |anchor_element| links to a URL which is one number different
// from the document's URL. Based on the value of the anchor element URL,
// and document URL, |is_url_incremented_by_one| may be true or false.
// Examples for different values of |is_url_incremented_by_one|:
// example.com/page9/cat5, example.com/page10/cat5 => true
// example.com/page9/cat5, example.com/page10/cat10 => false
static base::Optional<AnchorElementMetrics> Create(
const HTMLAnchorElement* anchor_element,
bool is_url_incremented_by_one);
// Extract features of the anchor element.
static base::Optional<AnchorElementMetrics> Create(const HTMLAnchorElement*);
// Returns the mojom struct used to send metrics to the browser process.
mojom::blink::AnchorElementMetricsPtr CreateMetricsPtr() const;
......
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