[Webkit-unassigned] [Bug 96972] New: [Win] Null check timing function received from CoreAnimation when calling CACFAnimationGetTimingFunction.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=96972

           Summary: [Win] Null check timing function received from
                    CoreAnimation when calling
                    CACFAnimationGetTimingFunction.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: roger_fong at apple.com
                CC: simon.fraser at apple.com, timothy_horton at apple.com


When paused, some CSS animations cause CoreAnimation to pass back a null timing function when calling CACFAnimationGetTimingFunction.
This patch fixes this simply by ensuring that if the output of this method is null, it does not get passed into CACFAnimationSetTimingFunction via the PlatformCAAnimation::copyTimingFunctionFrom method. This is a workaround. There is most likely a more appropriate fix in CoreAnimation to deal with the null return.

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