stylo: Make -moz-{tab-size, box-flex, image-region, outline-radius} animatable.
Make -moz-tab-size, -moz-box-flex, -moz-image-region, and -moz-outline-radius animatable, so test_transitions_per_property.html doesn't get any exception of these properties.
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Use Option instead of ServoUrl for url in opts
Cleaner mapping from parse_url to url_opt
Add comment about url parsing error
Print reason for parsing error
Remove comment about warning
Add home url when openning new browser window in CEF
Fix merge error
Fix parent climb hierarchy in send_frame_tree
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Shorthand support for SMIL
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This is a PR for https://bugzilla.mozilla.org/show_bug.cgi?id=1358966
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Share styles for elements with eager pseudo-elements attached to them
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Reduce the size of ApplicableDeclarationBlock.
The level is a u8, so on 64-bit it packs nicely after the u32 specificity.
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Define Gecko CounterStyle and FontFaceRule clone functions
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Defines and calls Gecko CounterStyle and FontFaceRule clone functions, protected by cfg directives to only apply in gecko builds.
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Increase the size of the style sharing cache to 31
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The idea is to put the memmoving of the ThreadLocalContext out of line from the point of view of top_down_dom so we don't need to allocate a large chunk of stack space for it.
Let's follow how Gecko does for this part (in nsRuleNode::ComputeListData).
We set mImageRegion.height or mImageRegion.width to zero if bottom or right is
None (i.e. auto).
Fix revalidation selectors when pseudo-elements are involved.
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Don't accept an extra token at the end of transform property
The lack of `input.try` usage makes transform property to accept values like `rotate(70deg)foo`.
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Removed root browsing context from constellation
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Removed the special root browsing context from the constellation.
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Parallel layout optimizations
This takes some of the optimizations made to parallel styling in #16971 and applies them to parallel layout. Specifically:
* Reduce the chunk size, to increase chances for parallelism on trees with small fan-out.
* Reduce allocations by using SmallVec.
* Reduce task switching by processing up to one chunk of children within the same rayon task as the parent.
This cuts the "Primary Layout Pass" time in **half** on the MySpace page from [tp5n], and on my other real-world test pages it is a small improvement or close to no change.
[tp5n]: https://wiki.mozilla.org/Buildbot/Talos/Tests#tp5n_pages_set
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