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Auto merge of #25763 - mrobinson:stacking-contexts-v1, r=SimonSapin

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Add initial support for stacking contexts to layout_2020

These changes add initial support for stacking contexts, enabling some parts of z-index to work properly.

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bors-servo 2020-02-17 07:32:41 -05:00 • committed by GitHub
commit 13ff7ce621
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27 changed files with 422 additions and 85 deletions
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components/style/properties/longhands/position.mako.rs
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@ -60,7 +60,6 @@ ${helpers.predefined_type(
"ZIndex",
"computed::ZIndex::auto()",
engines="gecko servo-2013 servo-2020",
servo_2020_pref="layout.2020.unimplemented",
spec="https://www.w3.org/TR/CSS2/visuren.html#z-index",
flags="CREATES_STACKING_CONTEXT",
animation_value_type="ComputedValue",