1921122 - [wpt-sync] Sync PR 48343 - The <embed> element does not have to enforce layout when the type attribute is set to image

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 48343 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/48343
Details from upstream follow.

zhoupeng <[e-mail]> wrote:

The <embed> element does not have to enforce layout when the type attribute is set to image

According to the spec1, the \<embed> element represents nothing
in those conditions:

The element has neither a src attribute nor a type attribute.
The element has a media element ancestor.
The element has an ancestor object element that is not showing
its fallback content.
There is no requirement for ImageType to enforce layout in the spec.
So removed the logic of forcing layout when type is set to image.

This patch also moves "embed-represent-nothing-04.html" to
"embed-in-object-fallback-image.html".
And "embed-represent-nothing-04.html is failing in all browsers.
According to the spec2:

If the data attribute is present and its value is not the empty
string, then: ...
Fallback: The object element represents the element's children.
This is the element's fallback content.
If the object element does not have a data attribute,
its children should be used as fallback content.
The test case in "embed-represent-nothing-04.html", object does not
have a data attribute, so it should fallback, show it's children.

Bug: 40780999
Change-Id: I86bcd3cfe68c3cbe882c02008770bd3330a56026
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5877938
Reviewed-by: Mason Freed \<[e-mail]>
Reviewed-by: Joey Arhar \<[e-mail]>
Commit-Queue: Peng Zhou \<[e-mail]>
Cr-Commit-Position: refs/heads/main@{#1360197}

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=f0f2f5210ecbcfae4cf1db61c32c8d33cdfc8f5f

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

CI Results

Ran 9 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 1 tests

Status Summary

Firefox

PASS: 1

Chrome

PASS: 1

Safari

PASS: 1

Links

Gecko CI (Treeherder)
GitHub PR Head
GitHub PR Base

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/b690ced154fe
[wpt PR 48343] - The <embed> element does not have to enforce layout when the type attribute is set to image, a=testonly

Comment 4

[Iulian Moraru]

https://hg.mozilla.org/mozilla-central/rev/b690ced154fe