зеркало из https://github.com/mozilla/gecko-dev.git
3d29b274ae
This is probably an old-ish bug made more frequent by the font loading optimizations. PostRebuildAllStyleData is a bit of a misnomer, but was always calling ClearCachedData() on the style set, even if we weren't guaranteed to restyle every element. This means both wasted work and correctness issues (as the "uses <rare-feature>" bits are cleared during this call, on the assumption that we'll then visit all elements and that'd recompute it properly). For now, unify a bit the different code paths and only clear these bits if we're guaranteed to restyle all elements. I should rename this to something better in a follow-up, and ideally also decouple the ClearCachedData() calls a bit... Differential Revision: https://phabricator.services.mozilla.com/D65740 --HG-- extra : moz-landing-system : lando |
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