[IntersectionOptimization] Use cached rects on scroll only and bug fixes
This may be the last effort for IntersectionOptimization. Now IntersectionOptimizatio uses the following cached rect invalidation method: - If the change is not scroll and visibility only, don't use cached rects; This avoids the complexity and under-invalidation issues for the cached rects. - If the change is scroll and visibility only, use the cached rects if there are no intermediate clippers. Bug fixes: - No-change transform update was treated as a non-scroll-only change (fixed in OnUpdateTransform in paint_property_tree_builder.cc); - Scrollbar paint invalidations were treated as non-scroll-only changes (now check for paint invalidation reason on the DisplayItemClient instead of NeedsCheckLayoutForPaintInvalidation). Bug: 40883761 Change-Id: Ic821c7d02420cf863d11ab1acd7a70180cf78a7f Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5400423 Reviewed-by:Stefan Zager <szager@chromium.org> Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org> Cr-Commit-Position: refs/heads/main@{#1280241}
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