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Auto merge of #18842 - heycam:skip-var-check, r=emilio

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style: Skip custom properties comparison if other inherited properties changed.

Servo half of https://bugzilla.mozilla.org/show_bug.cgi?id=1407246, reviewed there by Emilio.
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bors-servo 2017-10-11 21:45:51 -05:00 • committed by GitHub
commit 9f8514d2b9
1 changed files with 10 additions and 0 deletions
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10
components/style/gecko/restyle_damage.rs
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@ -57,6 +57,16 @@ impl GeckoRestyleDamage {
&mut reset_only,
)
};
if reset_only &&
old_style.custom_properties() != new_style.custom_properties() {
// The Gecko_CalcStyleDifference call only checks the non-custom
// property structs, so we check the custom properties here. Since
// they generate no damage themselves, we can skip this check if we
// already know we had some inherited (regular) property
// differences.
any_style_changed = true;
reset_only = false;
}
let change = if any_style_changed {
StyleChange::Changed { reset_only }
} else {