[Webkit-unassigned] [Bug 81461] New: [Refactoring] Simplify the update-scrolling-information-after-layout-logic

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=81461

           Summary: [Refactoring] Simplify the
                    update-scrolling-information-after-layout-logic
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org


The current code is pretty messy and it looks like some classes don't update the scrolling information after layout (see bug 81460 for example).

The current logic is spread over the code leading to discrepancies:
* RenderBoxes needs to do that
* but the method to actually handle it is on RenderBlock
* it's also super easy to forget to call it if you implement your own layout.

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