[Webkit-unassigned] [Bug 83213] New: RenderLayer scrollbars' updates should be split between layout induced and style change induced

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83213

           Summary: RenderLayer scrollbars' updates should be split
                    between layout induced and style change induced
           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
                CC: simon.fraser at apple.com, jamesr at chromium.org


The current code in RenderLayer::updateScrollInfoAfterLayout handles the 2 types of scrollbars' changes which is wrong. Several of the updates are only tied to style changes and should be done in RenderLayer::styleChanged().

This makes the code confusing to follow and adds more code to updateScrollInfoAfterLayout than necessary.

Patch forthcoming.

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