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Bug 1698926 [wpt PR 28106] - [PaintTiming] Fix document notified by SVG paints, a=testonly 

Automatic update from web-platform-tests
[PaintTiming] Fix document notified by SVG paints

Previously, the main frame would be notified of all SVG paints. This CL
fixes this and adds a WPT.

Bug: 1185509
Change-Id: I8a4435701227fdc2ff3fee20b5df1a2e14499e1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2765485
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#863470}

--

wpt-commits: a2108adbb566d81747c4f906cfd93d2b238fe6b2
wpt-pr: 28106
This commit is contained in:
Nicolás Peña Moreno 2021-03-17 13:35:49 +00:00 коммит произвёл moz-wptsync-bot
Родитель d1c770d59e
Коммит e072539e63
2 изменённых файлов: 34 добавлений и 0 удалений
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14
testing/web-platform/tests/paint-timing/fcp-only/svg-in-iframe.html Normal file
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@ -0,0 +1,14 @@
<!DOCTYPE html>
<title>Performance Paint Timing Test: SVG in iframe does not trigger FCP</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<iframe src="../resources/svg.html"></iframe>
<script>
promise_test(async (t) => {
await new Promise(resolve => {
window.addEventListener("message", resolve);
});
return assertNoFirstContentfulPaint(t);
}, "SVG in an iframe does not trigger FCP in the main frame");
</script>

20
testing/web-platform/tests/paint-timing/resources/svg.html Normal file
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@ -0,0 +1,20 @@
<!DOCTYPE html>
<div id="main">
<svg viewBox="0 0 10 10">
<defs>
<circle id="myCircle" cx="5" cy="5" r="4" stroke="blue" />
</defs>
<use id="circle" href="#myCircle" fill="green" />
</svg>
</div>
<script>
const observer = new PerformanceObserver(list => {
const fcp = list.getEntriesByName("first-contentful-paint");
if (!fcp.length)
return;
// Message the parent when FCP has been reached.
parent.postMessage("GotFCP", '*');
});
observer.observe({ type: "paint", buffered: true });
</script>