yulunwu2

Summary

Works almost exclusively on WebCore layout, specifically the new grid formatting context (GFC) and its LayoutIntegration path — track sizing space distribution, growth limits and gutter accounting, percentage/calc and fixed-length padding resolution for grid items, plus incremental removal of GFC avoidance reasons (borders, box-sizing: border-box, subgrid). The pattern is feature-completion work on a layout engine still being brought up: each commit either generalizes the track-sizing algorithm or narrows the set of cases that fall back to the legacy path, interleaved with WPT test syncs. No security or hardening commits appear in this window; the interesting property here is churn, since avoidance-reason removals expand which content the newer GFC code actually handles.

Components

Security Fix History

• No security fixes recorded

Hardening Commits

• No hardening commits recorded

Recent Commits

• 2026-08-05 [GFC] Distribute extra space into non-affected tracks.
• 2026-08-05 Sync css/css-highlight-api
• 2026-08-04 Sync `tools/metadata` from WPT Upstream
• 2026-08-04 [GFC] Distribute extra space up to or beyond track limits
• 2026-08-04 [GFC] Account for gutters when finding the space to distribute during track sizing.
• 2026-07-31 [GFC] Generalize distribute extra space to handle base sizes and growth limits
• 2026-07-30 [GFC] Extract the equal-distribution loop for track sizing space distribution
• 2026-07-30 [GFC][LayoutIntegrationUtils] Clarify intent of integration helper functions.
• 2026-07-29 [GFC] Key track sizing space distribution by grid track index
• 2026-07-29 [GFC] Resolve limited min-content contributions for auto-min tracks under a min-/max-content constraint
• 2026-07-28 [GFC] Consolidate the min/max-content constraint test and per-track content contributions
• 2026-07-27 [GFC] Remove GridItemHasPercentOrCalcPadding avoidance reason
• 2026-07-24 [GFC] Remove orphaned constraints from inline-axis grid item sizing functions
• 2026-07-24 [GFC] Resolve percentage/calc padding for grid items on grid area
• 2026-07-21 [GFC] remove borders from avoidance reasons
• 2026-07-21 [CMake] remove LayoutIntegrationFlexLayout.h from removed header list
• 2026-07-21 [GFC] Support fixed-length padding on grid items
• 2026-07-21 [GFC] We should bail out of GFC if a grid item has box-sizing: border-box
• 2026-07-15 [GFC] Add subgrid as avoidance reason.
• 2026-07-15 [list-marker] Add regression tests
• 2026-07-14 [GFC] Add a columns-only fast path for intrinsic width computation
• 2026-07-13 [GFC] Add scaffolding to classify intrinsic-width sizing path
• 2026-07-09 Unreviewed, reverting "Fix outside list-marker painting with relative-positioned block links"
• 2026-07-08 Remove overrides from WebCore::RenderScrollbarPart::marginTop()
• 2026-07-08 [Grid] Clarify grid item min content contributions when the grid item "behaves as auto"
• 2026-07-07 [GFC] refactor PlacedGridItem::preferredAspectRatio into GridLayoutUtils.
• 2026-07-01 [Grid] Grid items with stretch preferred size have incorrect min content contributions.
• 2026-06-30 [GFC] fit-content grid items should contribute min-content instead of used minimum size when sizing tracks.
• 2026-06-26 [GFC] Implement GridLayoutUtils::preferredSizeBehavesAsAuto
• 2026-06-18 [GFC] Flex tracks are sized imprecisely
• 2026-06-17 [Margin][Legend] Positive margin on fieldset legends should shift the fieldset down.
• 2026-06-16 grid-gutters-explicit-placement missing -ref
• 2026-06-12 [GFC] Grid items ignore row-gap/column-gap
• 2026-06-10 [GFC] Add optimized intrinsic-width sizing path
• 2026-06-09 [text-wrap: balance] Not applied to content with -webkit-line-clamp: 2
• 2026-06-07 [WPT] Mark border-width-rounding.tentative.html as flakey test.
• 2026-05-26 [GFC] Extract sizeColumnTracks helper from performGridSizingAlgorithm
• 2026-05-24 [GFC] Close updateScrollInfoAfterLayout transaction on GFC early-return
• 2026-05-19 [GFC][Crash] Grid items with auto height triggering a crash in blockContentSizeSuggestion()
• 2026-04-30 [List Marker] Search past empty inline items when parenting list markers
• 2026-04-22 [text-wrap] Fix crash in text-wrap-pretty due to index type confusion
• 2026-04-17 [Refactor] RenderBlockFlow::collapseMarginsWithChildInfo.
• 2026-04-16 [GFC] Handle percentage and calc specified size suggestion.
• 2026-04-15 [Refactor] updateListMarkerAttributes to calculateListMarkerAttributes in LayoutIntegrationBoxTreeUpdater
• 2026-04-14 [Reland][List Marker] Collapse anonymous blocks created for outside marker when block level elements prevents line-box p
• 2026-04-14 [Refactor] RenderBlockFlow::collapseMargins.
• 2026-03-29 Forced layouts are slower when all siblings create their own formatting context.
• 2026-03-19 [flex] Fix widths for flex items with percentage-height descendants
• 2026-03-18 [List Marker]Collapse AnonymousBlock created when block content prevents line-box parenting.
• 2026-03-14 [List Marker] Collapse anonymous blocks for outside marker when blockification prevents line-box parenting
• 2026-03-04 [GFC] Correctly handle track sizing with indefinite size but definite minimum size
• 2026-02-28 [GFC] Fix columnsCount() returning 0 when grid has no explicit rows.