[Webkit-unassigned] [Bug 147627] New: [CoordinatedGraphics] setAcceleratedCompositingForFixedPositionEnabled didn't work properly in WTR.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=147627

            Bug ID: 147627
           Summary: [CoordinatedGraphics]
                    setAcceleratedCompositingForFixedPositionEnabled
                    didn't work properly in WTR.
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit EFL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: hs85.jeong at samsung.com
                CC: demarchi at webkit.org

compositing/fixed-with-fixed-layout.html failed after r186911 because

# 49 line in LayoutTests/compositing/fixed-with-fixed-layout.html 
if (window.internals) {
    internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true);

'internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true)' didn't work properly in WTR.

CoordinatedGrapihcs set the 'AcceleratedCompositingForFixedPosition' in WebPage::setUseFixedLayout normally.
But only 'frameView->setUseFixedLayout()' was invoked in WTR if I use the 'internals.settings.setAcceleratedCompositingForFixedPositionEnabled' in test.
So we need to set the AcceleratedCompositingForFixedPositionEnabled in Internals::setUseFixedLayout() to work correctly.

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