style: Sync changes from mozilla-central, and update euclid #23827

According to the spec [1], we have to set those CSS properties on the root node, and then this root node would have a child node, background box [2], which would contain all other child nodes. In our case, the background box is `cueDiv` [3]. In theory, all those properties set on the root node should be inherited by the background box. However, when the background box is a pseudo element `::cue`, they won't be directly inherit from the the background box's parent, inherited styles would acutally come from video instead. Therefore, we have to directly set these properties on the pseudo element and mark them as `!important` to avoid being overrided by user style script. [1] https://www.w3.org/TR/webvtt1/#ref-for-list-of-webvtt-node-objects-9 [2] https://www.w3.org/TR/webvtt1/#webvtt-cue-background-box [3] https://searchfox.org/mozilla-central/rev/11712bd3ce7454923e5931fa92eaf9c01ef35a0a/dom/media/webvtt/vtt.jsm#533-534 Differential Revision: https://phabricator.services.mozilla.com/D35694

… use language-dependent quote marks. Differential Revision: https://phabricator.services.mozilla.com/D36429

According to this resolved spec issue: w3c/csswg-drafts#2140, we retire the 3-valued <position> on 1. `object-position` 2. `perspective-origin`, 3. `mask-position` 4. `circle()` and `ellipse()` , but still keep the support for `background-position`. Besides, I simply run this python script to generate the .ini file: ``` s = sys.argv[1] + ".ini" with open(s, "w") as f: f.write('[{}]\n'.format(sys.argv[1])) f.write(' expected: FAIL\n') f.write(' bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1559276\n') ``` Differential Revision: https://phabricator.services.mozilla.com/D37126

…sertions. Now if you add a new inherited, pref-controlled property, you must declare whether it can have an effect on scrollbar styles. If no, then the property will be skipped in the assertions that check whether our cached styles are equal to those we would compute. Differential Revision: https://phabricator.services.mozilla.com/D37507

…lesheets. And remove some of the ::placeholder and ::cue hacks where we need to use !important to make the property not apply for content but apply on UA sheets. The comment about the white-space property was wrong, we don't enforce it with !important in the UA stylesheets for <input> (we do for <textarea> though), so I've kept the flag since it really applies. Differential Revision: https://phabricator.services.mozilla.com/D37717

It had got outdated. Differential Revision: https://phabricator.services.mozilla.com/D37718

…-letter. From https://drafts.csswg.org/css-scroll-snap-1/#placement: > None of the properties in this module apply to the ::first-line and > ::first-letter pseudo-elements. Differential Revision: https://phabricator.services.mozilla.com/D37719

The assertion in properties.mako.rs ensures I got this right. Differential Revision: https://phabricator.services.mozilla.com/D37720

Differential Revision: https://phabricator.services.mozilla.com/D37721

The following properties accept <alpha-value> [1], which is "<number> | <percentage>", so we update the parser, spec links, and their web-platform-tests. 1. opacity 2. flood-opacity 3. fill-opacity 4. stroke-opacity 5. stop-opacity 6. -moz-window-opacity Besides, shape-image-threshold [2] still only accepts <number>, so we need to support a different version of `Opacity::parse()`. [1] https://drafts.csswg.org/css-color/#typedef-alpha-value [2] https://drafts.csswg.org/css-shapes/#shape-image-threshold-property Differential Revision: https://phabricator.services.mozilla.com/D37493

Bug: 1353164 Reviewed-by: heycam

Differential Revision: https://phabricator.services.mozilla.com/D36475

…longer has, and has been re-framed in the meantime. This is the easy fix. The hard fix (outlined in the comment) would be nice, but I don't think this bug alone justifies it. Differential Revision: https://phabricator.services.mozilla.com/D38184

This is not used for anything, as far as I can tell. Differential Revision: https://phabricator.services.mozilla.com/D38584

Differential Revision: https://phabricator.services.mozilla.com/D38530

Differential Revision: https://phabricator.services.mozilla.com/D38586

Bug: 1353164 Reviewed-by: heycam

…used.

<position> no longer parses three values.

There are a few canvas2d-related dependencies that haven't updated, but they only use euclid internally so that's not blocking landing the rest of the changes. Given the size of this patch, I think it's useful to get this landed as-is.

servo / servo

style: Sync changes from mozilla-central, and update euclid #23827

style: Sync changes from mozilla-central, and update euclid #23827

Commits on Jul 23, 2019