Handle properly alternate stylesheet
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Alternate stylesheet are now fetched and then desactivated instead of ignoring them.
I don't know if tests are required to check if the stylesheet is correctly loaded and disabled ?
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Extend supported geometry box value for geckolib
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r? @Manishearth
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Rework the way scroll roots are collected
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Collect scroll roots during the collect_stacking_context phase instead
of during display list construction. This will be useful in order to
collect containing block scroll roots as well as to give scroll roots
sequential ids in the future. This change also pulls stacking context
children out of the StackingContext struct itself, which should reduce
very slightly the memory used by the finished display list. This also
simplifies the DisplayListBuilder because it no longer has to maintain
a stack of ScrollRootIds and StackingContextIds and can instead just
rely on the program stack.
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Collect scroll roots during the collect_stacking_context phase instead
of during display list construction. This will be useful in order to
collect containing block scroll roots as well as to give scroll roots
sequential ids in the future. This change also pulls stacking context
children out of the StackingContext struct itself, which should reduce
very slightly the memory used by the finished display list. This also
simplifies the DisplayListBuilder because it no longer has to maintain
a stack of ScrollRootIds and StackingContextIds and can instead just
rely on the program stack.
Stylo: Store animation properties into gecko's struct
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This is the counter part of https://bugzilla.mozilla.org/show_bug.cgi?id=1328786
All patches get reviewed by r=@heycam.
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Correctly handle unserializable shorthand
get_shorthand_appendable_value doesn't always return a serializable value. This change makes it handle that case correctly.
This change also updates step number in property_value_to_css to reflect the latest spec.
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- [x] These changes fix stylo [bug 1329533](https://bugzilla.mozilla.org/show_bug.cgi?id=1329533)
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Fix loss of response type information in Fetch API
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Avoids mapping response types that are distinct according to [the spec](https://fetch.spec.whatwg.org/#concept-response-type) to fewer response types. Also updates test expectations to match that we now pass tests that check the response type.
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- [X] These changes fix#14068
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