[Webkit-unassigned] [Bug 117222] New: [Coordinated Graphics] Prevent a recursive painting in CoordinatedGraphicsLayer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117222

           Summary: [Coordinated Graphics] Prevent a recursive painting in
                    CoordinatedGraphicsLayer
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ryumiel at company100.net
                CC: noam at webkit.org, jae.park at company100.net


CoordinatedGraphicsLayer::flushCompositingState() will cross frame
boundaries if the GraphicsLayers are connected. In this case,
updateContentBuffers will invoke a painting of a sub-frame that causes
flushCompositingState recursively.

To prevent this behavior this patch extracts updateContentBuffers from
flushCompositingState, and places it in
updateContentBuffersIncludeSublayers, which is another tree traveler for
painting.

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