Emilio Cobos Álvarez 504af80ba6 Bug 1688293 - SVGUseFrame shouldn't invalidate rendering observers from DidSetComputedStyle. r=longsonr
This is unsound. We're restyling, so you're not supposed to post more
restyles and such until we start processing changes. We could make this
specific case work I suppose (because we only post change hints, not
restyles), though turns out this is unneeded because it's redundant, as
nsStyleSVGReset::CalcDifference already returns the right hint when
these properties differ:

  https://searchfox.org/mozilla-central/rev/851bbbd9d9a38c2785a24c13b6412751be8d3253/layout/style/nsStyleStruct.cpp#1022

Differential Revision: https://phabricator.services.mozilla.com/D102976
2021-01-25 22:33:41 +00:00
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