[Webkit-unassigned] [Bug 125883] New: Need to set preferred logical widths dirty bits when switching table layout

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=125883

           Summary: Need to set preferred logical widths dirty bits when
                    switching table layout
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: bdakin at apple.com, simon.fraser at apple.com,
                    dino at apple.com, thorton at apple.com


Consider merging https://src.chromium.org/viewvc/blink?revision=160530&view=revision
with https://chromium.googlesource.com/chromium/blink/+/91c17eddc1857827f0afd0215cf202677e322739

FixedTableLayout doesn't use the preferred logical widths from its cells to
determine column widths, however it still need to clear the dirty bits to
get notification when style.width changes on the cells.

When a table switches from table-layout:fixed to auto, the preferred logical
widths become meaningful. The dirty value will be used if we cleared the
dirty bit without computing it.

In this patch we do a massive invalidation to the preferred widths on the
cells when table layout has changed.

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