Hold stderr lock when using stdout through Console APIs.
This addresses a longstanding source of intermittent test failures where the stderr and stdout outputs get interleaved and the test harness becomes confused.
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WebIDL HTMLConstructor support
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spec: https://html.spec.whatwg.org/multipage/#htmlconstructor
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This commit also removes the old restyle_hints module and splits it into
multiple modules under components/style/invalidation/element/.
The basic approach is to walk down the tree using compound selectors as needed,
in order to do as little selector-matching as possible.
Bug: 1368240
MozReview-Commit-ID: 2YO8fKFygZI
Removed root browsing context from constellation
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Removed the special root browsing context from the constellation.
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Count number of braces on a line when checking spec links in test-tidy
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Allow more than one brace per line when checking spec links in test-tidy.
We had problems caused by `if unsafe { ... } {`.
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The pref `webgl.testing.context_creation_error` will cause creation of a new WebGLRenderingContext to fail, iff set to true.
Also update test expectation of `context_creation_error.html` to pass.
Implement custom element registry
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Implements https://html.spec.whatwg.org/multipage/#customelementregistry
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This file has become quite bloated lately. This commit deletes that file in
favor of a set of submodules.
The only noticeable change apart from code move, is converting deep_clone_foo
methods into a trait.
It also unifies logic related to different style rules in the same place.
There's some missing work, specially related to font-face and counter-style, but
I think this is worth landing in the meantime.
Redirect document loads manually
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r? @jdm
I ran some tests at random from the `navigating-across-documents` folder, and they are passing.
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Implement "update the image data"
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Spec compliant implementation of the [update the image data algorithm](https://html.spec.whatwg.org/multipage/embedded-content.html#update-the-image-data).
Currently still a work in progress, the ['async src complete test`](https://github.com/servo/servo/blob/master/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/img.complete.html#L33) is still passing as it was before, even though I switched to the new code, so I guess that's something.
@jdm I will be picking this up next weekend, I left a bunch of TODO and NOTES in the code, if you or someone else have time this week I would appreciate an initial scan and feedback.
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