Add tests for baseline, stretchiness and spacing in unknown elements. (…

…web-platform-tests#21257)

See https://github.com/mathml-refresh/mathml/issues/139

This also fixes wrong mpadded@notation attribute and repeats spacing tests
for other mrow-like elements.

Relax feature-detection for <menclose> (web-platform-tests#21256)

Discussion is still open: w3c/mathml#105
so let's only check some minimal <mrow> support.

Igalia does not plan to implement this element in Chromium for now so
making detection too strict is causing test failures.

Enforce character restrictions for registerProtocolHandler scheme

Schemes that begin with the prefix "web+" must contain one or more ASCII
lower alphas, forbidding other characters. Chrome previously allowed any
character otherwise valid in URI schemes. Now, it matches the HTML5 spec
(https://html.spec.whatwg.org/#custom-handlers) and Firefox.

Bug: 1019995
Change-Id: Id1b86eb75ca2159fc6b2c2bd1b96adac6ba494c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2009825
Commit-Queue: Eric Lawrence [MSFT] <ericlaw@microsoft.com>
Reviewed-by: Gyuyoung Kim <gyuyoung@igalia.com>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733234}

Stop using NS_ERROR_DOM_TYPE_ERR in Animation.

Differential Revision: https://phabricator.services.mozilla.com/D60362

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1610140
gecko-commit: 28dce2d017be7fcb093d88fac1436bca75facc89
gecko-integration-branch: autoland
gecko-reviewers: heycam

Stop using NS_ERROR_DOM_TYPE_ERR in SVGAnimatedEnumeration::SetBaseVa…

…lue.

It turns into a DOMException named 'TypeError' in the bindings, not into an actual TypeError.

Differential Revision: https://phabricator.services.mozilla.com/D60215

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1609856
gecko-commit: 045f16984963e58acb06bd7abf3af4f251feb898
gecko-integration-branch: autoland
gecko-reviewers: heycam

Added support for Edge Stable channel (web-platform-tests#21245)

Don't stop text-decoration-propagation in general for UA shadows.

We used to stop propagation of text-decoration into elements rendered
with UA shadow trees in general. Instead we should list the specific
cases where we need to do this. This is currently for media elements
which has a special rendering where the media controls do not use a
proper containing block model.

This fixes text-decoration propagation for elements like, summary,
details, object, and marquee.

TEST=fast/table/backgr_layers-opacity.html
TEST=fast/table/backgr_layers-opacity-collapsed-border.html
TEST=media/controls-styling.html

Bug: 1042760
Change-Id: Ice2681e4ac93b1a96ec598bcb614b6a8f57e0b21
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2007629
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733271}

part 5. Stop using NS_ERROR_DOM_TYPE_ERR in IsTypeSupported.

Differential Revision: https://phabricator.services.mozilla.com/D60223

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1609861
gecko-commit: 033d0e4500d9c469541bda7a3494925e2bb39272
gecko-integration-branch: autoland
gecko-reviewers: jya

Stop using NS_ERROR_DOM_TYPE_ERR in TimingParams.

It's causing us to throw weird DOMExceptions instead of actual TypeErrors.

Differential Revision: https://phabricator.services.mozilla.com/D60216

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1609858
gecko-commit: c48abb38a7d3e84c1179605937064736968e8680
gecko-integration-branch: autoland
gecko-reviewers: smaug

CookieStore: Validate subscription URLs in SW registration.cookie.sub…

…scribe()/unsubscribe()

Bug: 1035910
Change-Id: I3a19a1691b7bd04c8978c9aa7c75a3e0c430d92f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2008423
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733131}