[Webkit-unassigned] [Bug 110066] New: [EFL][Qt][WK2] Meta bug for not using ScrollView::m_fixedVisibleContentRect.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=110066

           Summary: [EFL][Qt][WK2] Meta bug for not using
                    ScrollView::m_fixedVisibleContentRect.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: luxtella at company100.net


Kenneth raised a question that we still need to use ScrollView::m_fixedVisibleContentRect.

Currently, we used fixedVisibleContentRect to make WebCore know actual scroll position and viewport size that PageViewportController deals with.
After Bug 105978 and Bug 107424, ScrollView can trace actual viewport size of PageViewportController. So if we make ScrollView know actual scroll position, we can remove fixedVisibleContentRect as well as delegates scrolling.

This huge changes have benefits as follow:
1. We share more code with other ports
2. It would be an intermediate step to go with scrolling coordinator (AFAIK cmarcelo and MPozdnyakov are investigating)

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