зеркало из https://github.com/mozilla/gecko-dev.git
681c592a20
Overflow properties have two semantics nowadays: 1. controlling whether the scrollbar should be shown; 2. controlling whether the content is scrollable. However, with the scrollbar-width property being added, scrollability and presence of scrollbar no longer binds together. This change attempts to draw a boundary between value of overflow and presence of scrollbar by making it clear that for ScrollReflowInput, we only care about whether scrollbar should be shown. This should make it easier to reason about further changes involving presence of scrollbar. MozReview-Commit-ID: 2E964z0SkW4 --HG-- extra : rebase_source : e59eb078127a71de5bc9b0537d4fe8d540965ba2 |
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